JPH02229979A - Hot water/cold water mixing control device - Google Patents

Abstract

PURPOSE:To enable saving of a power, to reduce a cost, and to improve reliability by a method wherein a variable bias means positioned facing the energizing means mounted to a valve stem is provided and is controlled by a control means, and through detection of a hot water feed stop state, the drive force of the variable bias means is stopped. CONSTITUTION:A variable bias means 20, formed with a plunger 21 made of a magnetic material and a coil 22, is mounted facing an energizing means 19 mounted to a valve stem 8, and a flow rate regulating on-off valve 14 driven by a drive means 23 and having a closing position detecting means 24 is provided to the outlet of a mixed flow. A control means 18 receives signals from a mixed hot water temperature detecting means 15 and a set means 17 to regulate a current to a coil 22, and by means of a signal from a flow rate detecting means 16, the stop of a hot water feed is decided to stop energization to the coil 22. This constitution enables reduction of the size of a device, ensurance of safety, and saving of a power.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a hot water mixing control device that adjusts the mixing ratio of hot water and water to obtain an optimal mixed water temperature. 2. Description of the Related Art Conventionally, there has been a hot water mixing device of this type as shown in FIG.

In FIG. 3, 1 is a hot water flow path, 2 is a water flow path, and an automatic pressure regulating valve 3 is provided in relation to each flow path. The automatic pressure regulating valve 3 includes a hot water side valve body 4 that reduces the primary pressure PH1 of the hot water flow path 1, a hot water side valve seat 5, a water side valve body 6 that reduces the primary pressure Pct of the water flow path 2, and a water side valve body 6 that reduces the primary pressure Pct of the water flow path 2. Valve seat 7, hot water side valve body 4, and water side valve body 6
and the primary pressure PH1 after depressurizing the hot water and water.
The piston 9 operates with a pressure difference of Pct, and even if the pressure of hot water or water changes suddenly, the automatic pressure regulating valve 3 moves with that pressure, and the secondary pressures PH2 and PC2 of hot water and water are adjusted. It works so that it always remains equal. The mixing ratio of hot water and water is varied by moving a temperature control valve 12 energized by a motor 11 from side to side to change the mixing temperature. 13 is a mixing section for hot water and water, and after mixing, a flow rate control on-off valve is used. The hot water is discharged through the hot water tank l4, and its temperature is detected by a mixed hot water temperature detection means (for example, a thermistor) 15, and its flow rate is detected by a flow rate detection means 1G, and the water is controlled to match the value of the setting means l7.
The n means 18 energizes the motor l1 and the flow rate adjustment on-off valve 14.

Problems to be Solved by the Invention However, in the above configuration, since the pressure regulating valve 3 and the regulating valve 1i are independent, the size becomes larger and the pressure loss also increases, which poses a problem when a large flow rate is required. becomes. Furthermore, the response to the temperature change is slow because the temperature control valve l2 is energized by the motor.

The present invention is intended to solve the problems of the prior art, and its first purpose is to control the temperature more quickly and supply a stable hot water mixture by directly driving the valve shaft with a variable bias means than with a motor. A second object of the present invention is to stop the supply of driving force to the variable bias means when the signal of the hot water tap stop detection means that detects the hot water tap stop state indicates the hot water tap stop state;
The purpose is to reduce power consumption. The third object of the present invention is to reduce power consumption by stopping the supply of driving force to the variable bias means after a certain period of time when the signal of the hot water tap stop detection means that detects the hot water tap stop state indicates the hot water tap stop state. The goal is to create a A fourth object of the present invention is to reliably detect the hot water tap stop state by using a flow rate detection device that detects the flow rate of the amount of mixed hot water as the hot water tap stop detection device that detects the hot water tap stop. A fifth object of the present invention is to inexpensively detect the hot water tap stop state by using a closed position detecting means for detecting the closed position of the flow rate regulating on-off valve as the hot water tap stop detecting means for detecting the hot water tap stop. A sixth object of the present invention is to quickly detect the hot water supply stop state by using a setting means for setting the start and stop of the hot water supply as a hot water supply stop detection means for detecting the stop of the hot water supply. Means for Solving the Problems In order to achieve the first and second objects, the hot water mixing device of the present invention includes a hot water flow path, a water flow path, and adjusts the flow rates of the hot water flow path and the water flow path. a hot water side valve body and a water side valve body, a valve shaft that opposes forces due to outlet pressures of the hot water side valve body and the water side valve body, and urging means that biases the valve shaft;
It has a variable bias means for applying a variable bias force opposite to the force of the urging means, a control means for controlling the variable bias means, and a tap stop detection means for detecting stoppage of tap water, the control means and main control means for issuing a signal to stop supplying driving force to the variable bias means when a signal from the hot water tap stop detection means indicates a hot water tap stop state.

In addition, in order to achieve the third object, the hot water mixing device of the present invention includes a hot water flow path and a water flow path, a hot water side valve body and a water side valve body that adjust the flow rates of the hot water flow path and the water flow path, A valve shaft that makes the forces due to the outlet pressures of the field side valve body and the water side valve body oppose each other, a biasing means that biases the valve shaft, and a variable bias force that applies a variable bias force that opposes the force of the biasing means. It has a bias means, a control means for controlling the variable bias means, and a hot water supply stop detection means for detecting a stoppage of hot water supply, and the control means starts when a signal from the hot water supply stop detection means indicates a hot water supply stop state. and main 'Mm means for issuing a signal to stop supplying driving force to the variable bias means when the value of the timer means reaches a constant value.

Further, in order to achieve the fourth object, the hot water mixing device of the present invention is provided with a flow rate detection means for detecting the flow rate of the amount of mixed hot water as a hot water supply stop detection means for detecting the stoppage of hot water supply. Further, in order to achieve the fifth object, the hot water mixing device of the present invention includes a flow rate adjustment on-off valve that adjusts the flow rate of the amount of mixed hot water as a hot water tap stop detection means for detecting the stop of hot water tap, and a closed position of the flow rate adjustment on-off valve. and a closed position detection means for detecting the closed position detection means.

In order to achieve the sixth object, the hot water mixing device of the present invention is provided with a setting means for setting the start and stop of hot water tap as a hot water tap stop detection means for detecting the stop of hot water tap. Operation With the above-described configuration, the supply of driving force to the mixing valve energizing means is stopped by detecting the hot water dispensing state, thereby reducing the power consumption of the hot water mixing control device. EXAMPLE An example of the present invention will be described below with reference to the drawings. Note that FIG. 1 is a sectional view of the hot water mixing device, and the same parts as in FIG. 3 are given the same numbers.

19 is a biasing means, and 20 is a variable biasing means that opposes the force of the biasing means 19 and applies a variable bias force. The variable bias means 20 has a plunger 21 made of a magnetic material, and a waterproof and insulated coil 22 around the plunger +21, and the coil 22 is connected to the control means l8.
It is connected to the. The flow rate adjustment on-off valve 14 is driven by a flow rate adjustment on-off valve driving means 23 . The closed position of the flow rate adjustment on-off valve 14 is detected by a closed position detection means 24.

FIG. 2 shows an example of the control means l8. 25 is main control means, 26 is timer means, and 27 is energizing amount setting means. Next, the operation of the configuration of the present invention will be explained.

When a current is applied to the coil 22 from the control means 18, the plunger 21 made of a magnetic material moves to the valve shaft 8 according to Fleming's law.
Apply bias force to This bias force and urging means 1
The automatic pressure regulating valve will be balanced when the biasing forces 9 are balanced. Therefore, by changing the current flowing through the coil 22, the balance point of the automatic pressure regulating valve 3 can be moved. For example, when the current is small, the force of the biasing means 19 is stronger, so the water side valve body 6 opens more than the hot water side valve body 4, and the outlet temperature becomes lower.

When the current is increased, the plunger 21 is pushed out against the force of the biasing means 19, so that the hot water side valve body 4 begins to open, and as a result, the temperature of the tapped water increases. In this manner, the control means 18 manually inputs the signal from the mixed hot water temperature detection means 15 and the signal from the setting means 17 to adjust the current flowing through the coil 22 so that the outlet hot water temperature becomes the set temperature. The electromagnetically driven variable bias means 20 can operate faster than conventional motor-driven valves, and can quickly adjust the temperature and supply a stable mixed water temperature. Furthermore, the operation when stopping the hot water supply will be explained.

The case where the flow rate detection stage 16 is used as the means for detecting the stoppage of hot water tapping will be explained. When the hot water supply is stopped by the setting means 17 or when the hot water supply is stopped due to a water outage, etc., the main control means 2
5 detects that the flow rate is decreasing based on a signal from the flow rate detection means 16. If the flow rate falls below a certain level, it becomes difficult to control the mixed water temperature to the set value, so the main control means 25
is the driving force (
sends a signal to stop the supply of current). As a result, the supply of driving force to the coil 22 is stopped after the hot water supply is stopped, so that the power consumption of the hot water mixing control device can be reduced. Furthermore, when the driving force to the coil 22 is stopped, the valve stem 8 is pushed by the biasing means 11, and the hot water side valve body 4 is almost fully closed.Even if the flow rate adjustment on-off valve 14 is opened due to malfunction etc., the hot water temperature remains higher than the set temperature. It is safe and will not cause damage. Further, since the flow rate detection means 16 for detecting the flow rate of the amount of mixed hot water is used as the hot water supply stop detection means, the hot water supply stop state can be reliably detected.

Next, the operation when stopping the hot water supply using the timer means 26 will be explained. Flow rate detection means 16 as hot water stop detection means
We will explain the case of using . When the hot water supply is stopped by the setting means 17 or when the hot water supply is stopped due to a water outage, etc., the main control 1n means 25 detects that the flow rate is decreasing based on the signal from the flow rate detection means 16. When the flow rate falls below a certain level, it becomes difficult to control the mixed water temperature to the set value, so the main control means 25 controls the coil 2 via the energizing amount setting means 27.
The position of the valve shaft 8 is fixed by keeping the driving force supplied to the valve shaft 2 at a constant value. Furthermore, a signal is sent to the timer means 26 to start it. The timer means 26 starts and outputs a signal to the main control means 25 when the value exceeds a certain value. Main control means 2
5 outputs a signal to stop the supply of driving force to the coil 22 to the energizing amount setting means 27 when the signal from the timer 1,000 stages 27 is input. At this time, the timer means 27 is reset. As a result, the supply of driving force to the coil 22 is stopped after a certain period of time has elapsed after the hot water supply is stopped, so that the power consumption of the hot water mixing control device can be reduced. Furthermore, when the driving force to the coil 22 is stopped, the valve stem 8 is pushed by the biasing means l1, and the hot water side valve body 4 is almost fully closed.Even if the flow illumination opening/closing valve l4 is opened due to malfunction, etc., the outlet hot water temperature remains at the set temperature. It is safe because it does not become hotter. Further, when discharging and stopping hot water are repeated in a short period of time, the processing of the timer means 27 is not completed, so the valve stem 8 remains at a position where the previously set temperature can be dispensed. Therefore, the temperature of the mixed hot water at the time of re-dispensing is stable, and since the flow rate detection means l6 that detects the flow rate of the amount of mixed hot water is used as the dispensing stop detection means, it is possible to reliably detect the dispensing stop state. Next, the case where the closed position detection means 24 is used as the hot water supply stop detection means will be explained. When the flow rate adjustment on-off valve 14 is closed, the main control stage 25 detects that hot water has stopped being dispensed by the closed position detection means 24. Thereafter, the coil 22 is manufactured in the same manner as in the above embodiment.
When the supply of driving force to is stopped, the same effect as when using the flow rate detection means l6 can be obtained. Furthermore, since the closed position detection means 24 is used as the hot water supply stop detection means, the hot water supply stop state can be detected at low cost. Next, the case where the setting means 17 is used as the hot water supply stop detection means will be explained. When stopping the hot water supply by the setting means l7,
When the main control means 25 receives the tap water stop signal from the setting stage 17, it closes the flow rate adjustment on-off valve 14 using the flow N adjustment on-off valve driving means 23 via the energizing amount setting means 27. Further, when the supply of driving force to the coil 22 is stopped in the same manner as in the above embodiment, the same effect as when using the flow rate detection means 16 can be obtained. Further, since the setting means 17 is used as the hot water supply stop detection means, the hot water supply stop state can be detected quickly.

In each of the above embodiments, the main control stage 25 uses one of the flow rate detection means 16, the closing position detection means 24, and the setting stage l7 as a method for detecting the stoppage of hot water dispensing. Manually generate two or more signals and at least one of them
When two signals indicate that the hot water supply is stopped, the hot water supply is stopped and the supply of driving force to the coil 22 may be stopped in the same manner as in the above embodiment.

In addition, in normal use, when the water pressure fluctuates, the mixing valve 3 operates as before, and if the pressure receiving areas of the hot water side valve body 4, water side valve body 6, and piston 9 are made equal, the secondary pressure PH
2 and PC2 are maintained at the balance point by the biasing means 19 and the variable bias means 20. Furthermore, since the pressure regulating valve and temperature regulating valve can be integrated into one, the size can be made smaller. Effects of the Invention As described above, the hot water mixing control device of the present invention has a hot water flow path and a water flow path, a hot water side valve body and a water side valve body that adjust the flow rates of the hot water flow path and the water flow path, and the dry side valve body. A valve shaft that makes the forces due to the outlet pressures of the valve body and the water side valve body oppose each other, a biasing means that biases the valve shaft, and a variable bias force that applies a variable bias force that opposes the force of the biasing means. It has a bias means, a control means for controlling the variable bias means, and a hot water supply stop detection means for detecting a stop of hot water supply, and the control means detects the hot water supply stop state when a signal from the hot water supply stop detection means indicates a hot water supply stop state. Since the main control means outputs a signal to stop the supply of driving force to the variable bias means, when the hot water supply stop state is detected, the supply of driving force to the variable bias means is stopped, thereby saving power in the hot water mixing control device. You can aim for Furthermore, by stopping the supply of driving force, the heat generation of the variable bias means can be suppressed and failures can be prevented. Furthermore, since the shape can be configured to be smaller, the protruding part can also be made smaller when used in the bathroom, making it safer. The present invention also provides a hot water flow path, a water flow path, a hot water side valve body and a water side valve body that adjust the flow rates of the vortex flow path and the water flow path, and a force due to the outlet pressure of the hot water side valve body and the water side valve body. a valve shaft that faces each other, a biasing means for biasing the valve shaft, a variable biasing means for applying a variable bias force opposite to the force of the biasing means, and a control means for controlling the variable biasing means. , a hot water supply stop detection means for detecting a stoppage of hot water supply; the control means includes a timer means that starts when a signal from the hot water supply stop detection means indicates a hot water supply stop state; and a timer means that starts when the value of the timer means reaches a constant value. Since the main control means for issuing a signal to stop the supply of driving force to the variable bias means detects the stoppage of hot water supply based on the signal from the flow rate detection means, and when a certain period of time has elapsed after the stoppage of hot water supply, the control means sends a signal to stop the supply of driving force to the variable bias means. By stopping the supply of driving force, the power consumption of the hot water mixing control device can be reduced. Furthermore, by stopping the supply of driving force, the heat generation of the variable bias means can be suppressed and failures can be prevented. In addition, if hot water is repeatedly tapped and stopped in a short period of time, the timer means has not finished processing, and the mixing valve remains in the position it was in when hot water was stopped, so the temperature of the mixing field is stable and safe when hot water is tapped again. can provide comfortable hot water. Further, the present invention includes flow rate detection means for detecting the flow rate of the amount of mixed hot water as the hot water supply stop detection means for detecting the stoppage of hot water supply, so that the hot water supply stop state can be reliably detected. Further, the present invention is provided with a flow rate adjustment on-off valve that adjusts the flow rate of the amount of mixed hot water as a hot water tap stop detection means for detecting a hot water tap stop, and a closed position detection means that detects a closed position of the flow tiFl node on/off valve. A hot water supply stop state can be detected at low cost.

Further, the present invention includes a setting means for setting the start and stop of hot water tap as the hot water tap stop detection means for detecting the hot water tap stop, so that the hot water tap stop state can be detected quickly.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a hot water mixing control device according to an embodiment of the present invention, FIG. 2 is a control block diagram of the same hot water mixing device, and FIG. 3 is a sectional view of a conventional hot water mixing control device. 1...Hot water flow path, 2...Water flow path, 4...
...Hot water side valve body, 6...Water side valve body, 8...
... Valve shaft, 15 ... Mixed water temperature detection means, 16
...Flow rate detection means, 17...Setting means, 18...Control means, 19...Biasing means, 20...Variable bias Means, 24...
...Closed position detection means. Agent's name Patent attorney Shigetaka Awano Figure 4 -11+8 --- Kibian Shuku Romizu Ryu Riseibenryu 7J Closed position elliptical diagram

Claims (5)

[Claims] (1) A hot water flow path, a water flow path, a hot water side valve body and a water side valve body that adjust the flow rates of the hot water flow path and the water flow path, and a force due to the outlet pressure of the hot water side valve body and the water side valve body. Valve shafts facing each other, urging means for urging the valve shafts, variable bias means for applying a variable bias force opposite to the force of the urging means, and control means for controlling the variable bias means; a hot water tap stop detection means for detecting a hot water tap stop detection means, and the control means is configured to output a signal to stop the supply of driving force to the variable bias means when a signal from the hot water tap stop detection means indicates a hot water tap stop state. A hot water mixing control device consisting of a control means. (2) A hot water flow path, a water flow path, a hot water side valve body and a water side valve body that adjust the flow rates of the hot water flow path and the water flow path, and a force due to the outlet pressure of the hot water side valve body and the water side valve body. Valve shafts facing each other, urging means for urging the valve shafts, variable bias means for applying a variable bias force opposite to the force of the urging means, and control means for controlling the variable bias means; hot water supply stop detection means for detecting a stoppage of hot water supply; the control means includes a timer means that starts when a signal from the hot water supply stop detection means indicates a hot water supply stop state; and a timer means that starts when the value of the timer means reaches a constant value. A hot water mixing control device comprising a main control means that issues a signal to stop supplying driving force to the variable bias means. (3) Claim in which a flow rate detection means for detecting the flow rate of the amount of mixed hot water is used as the hot water supply stop detection means for detecting the stoppage of hot water supply (
The hot water mixing control device according to 1) or (2). (4) Claim (1) wherein a flow rate adjustment on-off valve that adjusts the flow rate of the mixed hot water amount and a closed position detection means that detects the closed position of the flow rate adjustment on-off valve are used as the hot water tap stop detection means for detecting the hot water tap stop. ) or the hot water mixing control device described in (2). (5) The hot water mixing control device according to claim 1 or 2, wherein setting means for setting the start and stop of hot water tap is used as the tap stop detection means for detecting the stop of hot water tap.