JPS60201173A - Hot-water and water mixing device - Google Patents

Abstract

PURPOSE:To supply mixed hot-water at a stable temperature even if water pressure or hot-water pressure changes suddenly by computing the temperature of mixed hot-water from the quantity of hot-water, the temperature of hot-water, the quantity of water and the temperature of water, and comparing the computed temperature with the preset value of a mixed hot-water temperature setting device to control a ratio control valve. CONSTITUTION:In a ratio control valve control device 34, the temperature of mixed hot-water is computed from signals of a hot-water quantity sensor 18, a hot-water temperature thermister 19, a water quantity sensor 20 and a water temperature thermistor 21, and a ratio control valve 22 is controlled to drive to get to a mixing ratio where any difference between the obtained computed value of mixed hot-water temperature and the present value of a mixed hot-water temperature setting decide 35 disappears. Further, a mixed hot-water temperature signal detected by a mixed hot-water thermistor 23 is compared with the preset value of the mixed hot-water temperature setting device 35, and the fine adjustment for the mixing ratio is performed by the ratio control valve 22, so that the ratio is controlled to attain the mixed hot-water temperature which exactly agrees with the preset value.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a hot water mixing device that adjusts the mixing ratio of field and water to obtain an appropriate temperature.

Conventional Structure and Problems Conventionally, there has been a pumped water mixing device of this type as shown in FIG.

In Figure 1, a pumping inlet 1, a water inlet 2 and a mixing hot water outlet 3
Inside the valve body 4, which has a and the water side valve body 6 are fixedly provided on the shaft 7, and this l1llI17 is connected to an external screw mechanism 8.
and is driven by a motor 10 via a gear 9. The temperature of the mixed hot water is detected by a temperature detector 11, and a temperature setting device 1
The controller 13 controls the motor 1 to eliminate the temperature deviation between the motor 1 and the motor 2.
0 is driven and controlled to adjust the mixing local. In other words, when you set the desired mixed water temperature with the temperature setting device 12,
While monitoring the mixed water temperature with a temperature detector 11, the motor 10 controls the hot water side valve body 5 and the water side valve body 6 to positions where an appropriate temperature is obtained.

Since the conventional hot water mixing device was constructed as described above, it had the following problems.

(1) Since the only signal that adjusts the mixing ratio is the signal obtained from the temperature detector 11 after mixing, if the water pressure or hot water pressure suddenly changes, the mixed water temperature will change significantly.
Otherwise, it would become unusable, and it would take a long time to settle the water mixture back to its original temperature, making it inconvenient and dangerous to use.

(2) When a faucet or the like is closed and the supply of mixed hot water is stopped, the temperature around the temperature detector 11 will cool down due to natural cooling, or the temperature setting device 12 will adjust the indicated mixed water temperature accordingly. In order to obtain hot water, 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 if hot water supply is restarted, hot water will be supplied, which is dangerous.

Purpose of the Invention The present invention solves these conventional problems, and provides ease of use and safety by being able to supply mixed hot water at a stable temperature even when the water pressure or hot water pressure changes suddenly, and at a temperature that does not have slight deviations. The purpose of the present invention is to provide a high water mixing device with excellent performance.

Structure of the Invention In order to achieve this object, the present invention comprises a ratio control valve that adjusts the mixing ratio of hot water and water, a hot water amount detector that detects the amount of hot water, a hot water temperature detector that detects the temperature of the hot water, and A water quantity detector to detect, a water temperature detector to detect water temperature, a mixed hot water temperature detector to detect mixed hot water temperature, a mixed hot water temperature setting device to set the temperature of mixed hot water, and these hot water quantity tests j4:'1 water temperature detector,
A ratio control valve controller that controls the ratio control valve by comparing the calculated value obtained by calculating the signals of the mercury detector and the water temperature detector, the signal of the mixing high temperature detector, and the Shingetsu of the mixing hot water temperature setting device. Configure a hot water mixing device, calculate the mixed hot water temperature from the amount a, hot water temperature, water amount, and water temperature, compare this calculated value with the setting value of the mixed hot water temperature setting device, and find the mixing ratio where the values match. In addition to quickly controlling the ratio control valve, the mixed water temperature detected by the mixed water temperature detector is also compared with the set value of the mixed water temperature setting device to finely adjust the mixing ratio.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 2 and 3. In FIG. 2, a hot water amount sensor 18 for detecting the amount of hot water, a hot water temperature thermistor 19 for detecting the hot water temperature,
A water quantity 20 for detecting water quantity, a water temperature thermistor 21 for detecting water temperature, a ratio control valve 22 for adjusting the mixing ratio of hot water and water, a mixed hot water temperature thermistor 23, etc. are provided.

Mixed star Senri-18 is a fixed wing vehicle 24 that swirls the flow.
, hole 2 made of magnetic material rotated by swirling flow.
5. The leakage prevention means 26 prevents the pole from flowing out, and the magnetoresistive element 27 detects the rotation of the hole and generates a pulse signal. The water ill processor 20 is this @amount sensor 18
It has the same configuration as . Further, the ratio control valve 22 is biased outwardly by a spring 31 with both outer ends of the hot water side valve body 28 and the water side valve body 29 regulated by the valve 1i+i 30, and the valve stem 30 is externally biased. It is configured to be driven by a provided motor 32 via a gear hook 33. Ratio control valve 22 is regulated and controlled by ratio control valve controller 34 . This ratio control valve controller 34 receives signals from a hot water amount sensor 18, a hot water temperature thermistor 19, a water amount sensor date indicator 20, a water temperature/thermistor 21, a mixed hot water temperature setting device 35, and a mixed hot water temperature thermistor 23. . Inside the ratio control valve controller 34, a hot water amount sensor 18, a hot water temperature thermistor 19, a water amount sensor 20, a water temperature thermistor 21
Temperature calculation of the mixed water temperature is performed from the signal, and the ratio control valve 22 is driven and controlled until the mixture ratio is such that the obtained calculated value of the mixed water temperature and the set value of the mixed water temperature setting device 35 disappear. Ru. In other words, using equation 7, the theoretically mixed water temperature is calculated as follows.

CM rMQMTM= CHγHQHTH-1-CCr
CQCTCC: specific heat of water (lower case M: mixing, easy, H: conquering, C: water) γ, specific gravity of water (same as above) Q: flow rate (same as above) T: temperature (same as above) where CM≠ Since cHFcc and γMFγHFγC and QM = QH10C, (QH1QC) TM = QHTH + QCTc, the mixed hot water temperature TM can be determined by calculation from hot water amount QH, hot water temperature T) (, water amount Qc, and water temperature TC. The motor 32 is controlled at a driving speed proportional to the deviation ΔT2TMS-TM between the mixed water temperature TM obtained by this calculation and the mixed water temperature TMS set by the mixed water temperature setting device 35, The side valve body 28 and the water side valve body 29 adjust the opening degrees of the hot water side and the water side in inverse proportion to obtain the mixed hot water temperature at a set value.

However, in reality, the hot water quantity detector 18, hot water temperature detector 19, water quantity detector 20, and water temperature detector 21 naturally have detection errors due to manufacturing variations, differences in receiving conditions, usage conditions, etc. . Then, by adding, subtracting, multiplying, and dividing these errors through calculations, the error "1" further spreads. In order to eliminate this adverse effect, the mixture ratio of the ratio control valve 22 is finely adjusted based on the mixed water temperature signal detected by the mixed water temperature thermistor 23, and the temperature error in the final desired mixed water temperature is corrected to be small. ing. The control block diagram shown in FIG. 3 represents this concept. Further, the ratio control valve controller 34 stops energizing the motor 32 and stops driving the ratio control valve 22 when the signals from both the water flow sensor 18 and the water flow sensor 20 become lower than a predetermined value. It also has a function to start driving when the temperature reaches the north, and a function to directly retrieve and display the instantaneous values of the flow rate and temperature of each part, and the calculated values of the amount of hot water and hot water temperature, according to instructions from the mixing hot water temperature setting device 35. Note that 36 is a terminal faucet.

Next, the operation of this embodiment will be explained.

When the desired mixed water temperature is set with the mixed water temperature setting device 3S and the terminal faucet 36 is opened, water and/or water starts flowing, and the signals from at least one of the IT sensor 18 and the water flow sensor 20 reach a predetermined value. At the stage where the threshold is exceeded, energization of the motor 32 is started. Then, the mixture ratio is controlled to eliminate the deviation between the mixed hot water temperature value TM determined by calculation of the signals from the hot water amount sensor 18, hot water temperature thermistor 19, mercury sensor 20, and water temperature thermistor 21, and the value TMS set by the mixed hot water temperature setting device 35. Valve 22 is controlled. Furthermore, the mixed hot water temperature signal detected by the mixed hot water temperature thermistor 23 is compared with the value set by the mixed hot water temperature setting device 35, and the fine adjustment of the mixing ratio is performed by the ratio control valve 22. The ratio adjustment is made to the mixed water temperature that matches the value. In this state, the mixed hot water will be supplied in a stable state as long as the hot water pressure that affects Wenzhou, the water pressure that affects the hot water temperature, the water volume, and the water temperature do not change. Next, if we assume that the hot water pressure or another hot water tap is closed and suddenly rises, the high pressure fluctuation will immediately appear as a lift fluctuation, so the lift sensor 18 or this is detected, and the ratio control valve controller 34 receives a message (I r-1
, is emitted. Then, since the calculated value TM becomes different, the ratio control valve 22 is controlled to a mixing ratio that provides an appropriate mixed water temperature.
Furthermore, the mixing Ufu is finely adjusted based on the signal from the mixing 152-inch Renner mixer 23. Even when the hot water pressure drops or the water pressure rises or falls, overshoots and undershoots of the mixed water temperature are prevented in the same way.

The same applies if the temperature of hot water or water changes suddenly. In other words, the present invention does not only detect and control the fluctuations that result as mixed hot water temperature fluctuations when there are various fluctuations, as in the conventional method, but instead predicts the results quickly and performs control. Kake,
Another feature is that the signal from the mixed water temperature thermistor 23 is fed back for fine adjustment of the mixed water temperature.

When there is no longer a need for hot water supply and the faucet 136 is closed, both the hot water flow rate sensor 18 and the water flow rate sensor 20 are zero, so the ratio control valve controller 34 detects that the hot water supply has been stopped and starts driving the motor 32. Stop. Therefore, the temperature and humidity are maintained due to natural cooling. Even if the ambient temperature of the misk 19 drops, the ratio control valve 22 of the conventional method opens the hot water side and closes the water side.
There is no need for a four-step operation, which prevents hot water from being supplied when hot water supply is restarted, and also reduces motor power consumption.

In addition, while using hot water supply, the amount of hot water, amount of water, water temperature, water temperature, etc.
The calculated values of the amount and hot water temperature can also be displayed and known by switching the mixing hot water temperature setting device 35.

In particular, the integrated value of the amount of hot water and water temperature is useful because it allows you to know the amount of energy used and the amount of heat obtained when connected to solar equipment.

In this embodiment, the ratio control valve controller 34 stops driving the ratio control valve 22 when the signal values of the power distribution sensor 18 and the water flow sensor 20 are both below a predetermined value. When the temperature exceeds the set value, the drive starts, so when hot water supply resumes, it is safe because the hot water that exceeds the set value will not be supplied. 2. The power consumption of the motor can also be saved, achieving energy savings.

In addition, the ratio control valve controller 34 calculates the hot water amount sensor 18 and the hot water temperature thermistor 19 for display, as well as the signal portion 11B of various instantaneous values, so it is convenient to know the calorific value calculation value and the instantaneous value of the hot water temperature. It has the effect of increasing sex.

Effects of the Invention The present invention detects the amount of water, water temperature, water amount, and water temperature, calculates the mixed water temperature, and controls the ratio control valve so as to eliminate the deviation from the temperature setting value on the mixing water temperature setting device. In addition, the ratio control valve is further finely adjusted to eliminate temperature deviation between the mixed water temperature detector and the mixed water temperature setting device, so the following effects are achieved.

(1) Even if there are fluctuations in hot water pressure or water pressure, or fluctuations in hot water or water temperature, the hot water amount detector, water amount detector, hot water temperature detector, and water temperature detector quickly detect the changes and use calculations to calculate the mixed water temperature. Since the ratio control valve is controlled to predict and cancel the change, there is no overshoot or untashoot of the mixed water temperature, making it safe and easy to use.

(2) Furthermore, since the ratio control valve is finely adjusted based on the mixed volume detected by the mixed hot water temperature detector, a steady temperature deviation does not occur and the mixed vortex part exactly set by the mixed hot water temperature setting device can be obtained. .

(3) The signals from the hot water quantity detector, hot water temperature detector, water quantity detector, and water temperature detector can be used to start, stop, and display the instantaneous value of the ratio control valve.
It can be used to calculate the amount of heat, etc., increasing safety, energy saving, and convenience.

FIG. 2 is a sectional view showing an embodiment of the present invention, and FIG. 3 is a control block diagram of the embodiment.

18... Hot water amount sensor (hot water amount detector), 19...
Editorial Department Misc (water temperature detector), 2o...Water flow sensor (water flow detector), 21...Water temperature thermistor (
water temperature detector), 22... Ratio control valve, 23...
...Mixing section thermistor (mixed water temperature detector), 34.
...Ratio control valve controller, 35... Mixed hot water temperature setting device.

Name of agent: Patent attorney Toshio Nakao (1st person)
11

Claims (3)

[Claims] (1) A ratio control valve that adjusts the mixing ratio of field and water, and 1f
a hot water amount detector that detects fi, a hot water temperature detector that detects hot water temperature, a water amount detector that detects water amount, a water temperature detector that detects water temperature, and a mixed high temperature detector that detects mixed hot water temperature; a mixing water temperature setting device for setting the mixing water temperature; and a field increase detector;
Ratio control valve control that controls the ratio control valve by comparing the calculated value obtained by calculating the signals of the hot water temperature detector, the water amount detector, and the water temperature detector, the signal of the mixing high temperature detector, and the signal of the mixing local setting device. A pumped water mixing device consisting of a container. (2) The ratio control valve controller stops driving the ratio control valve when the signals from the lift foot detector and the water flow sensor are both below a predetermined value, and when either signal exceeds a predetermined value. Claim 1 configured to drive
Hot water mixing device as described in section. (3) The ratio control valve controller includes a hot water amount detector, a hot water temperature detector,
The pumped water mixing device according to claim 1, which is configured to perform signal calculation of the water amount detector and water temperature detector and signal separation of instantaneous values.