JP2962164B2 - Hot water mixing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot and cold water mixing apparatus capable of controlling and mixing flow rates, for example, mixing hot water and water to supply hot water at an appropriate temperature.

[0002]

2. Description of the Related Art FIG. 6 shows a conventional water / water mixing apparatus of this kind (for example, Japanese Patent Application Laid-Open No. 64-3436). In the figure, 1 is a heating path 3 passing through a heat exchanger 2 and a heat exchanger 2.
And a bypass 4 in parallel with the hot water supply circuit.
Reference numeral 5 denotes a heating device such as a burner for heating the heat exchanger 2, and reference numeral 6 denotes a capacity control device such as a gas proportional valve for controlling the calorific value of the heating device 5. Reference numeral 7 denotes a water temperature detector provided on the water inlet side of the hot water supply circuit 1 and detects a water supply temperature. Reference numeral 8 denotes a water temperature detector provided on the outlet side of the hot water supply circuit 1 and detects a mixed hot water temperature or the like.
Reference numeral 9 denotes a flow rate detector for detecting a flow rate to the heat exchanger 2, which is disposed in the heating path 3. A mixing valve 10 is provided in the bypass passage 4 to control the amount of hot water and water by controlling the amount of bypass water by adjusting the opening. Reference numeral 11 denotes a temperature setting device.
Reference numeral 12 denotes a control circuit unit, a calorie control unit 13 for operating the capacity control unit 6 based on signals from the water temperature detector 7, the flow rate detector 9, and the temperature setter 11, the temperature setter 11, the hot water temperature detector 8, and the flow rate detection. An energizing amount setting means 14 for setting an energizing amount of a driving means such as a servomotor for energizing the mixing valve 10 in accordance with a signal from the device 9 is built in. Reference numeral 15 denotes a water governor for controlling the maximum flow rate.

[0003]

However, in the above-described conventional hot water mixing apparatus, after the flow rate fluctuation is detected by the flow rate detector 9, the deviation between the mixed hot water temperature detected by the hot water temperature detector 8 and the set temperature is detected. Was calculated, the amount of bias was determined according to the deviation, and the mixing valve 10 was driven. That is, since the valve opening of the mixing valve 10 is adjusted after the difference between the mixed hot water temperature and the set hot water temperature is detected, a control delay from changing the flow rate to driving the mixing valve 10 occurs, and the tap water is temporarily discharged. An overshoot in which the temperature was significantly higher than the set hot water temperature or an undershoot in which the temperature was significantly lower than the set hot water temperature occurred. Therefore, when the user adjusts the flow rate, the user may feel discomfort.
In particular, with regard to overshoot, there is a problem that high-temperature hot water that causes a burn is considered dangerous.

[0004] The present invention is to solve the above problems,
In response to the input signal for changing the flow rate, the valve opening of the flow control valve is started to be adjusted, and the hot water temperature deviation that occurs in accordance with the amount of bias of the flow control valve is predicted. It is a first object of the present invention to provide a hot and cold water mixing apparatus free from overshoot and undershoot due to a change in flow rate by driving a mixing valve based on the above.

A second object is to correct the maximum deviation according to the flow change input signal when overshoot and undershoot occur due to the flow change, and to reduce the maximum deviation stored according to the flow change input signal. An object of the present invention is to provide a hot and cold water mixing apparatus that can reliably prevent overshoot and undershoot due to flow rate change under any use condition by adjusting the opening of the mixing valve when the flow rate is changed based on the flow rate change.

A third object is to provide a mixing valve for changing the flow rate when overshoot and undershoot do not occur when the flow rate is changed or when the user does not feel the maximum deviation (temperature change). An object of the present invention is to provide a hot and cold water mixing apparatus that can reduce the number of times of using the mixing valve driving means and reduce power consumption by not performing the opening degree adjustment.

A fourth object of the present invention is to further control the opening of the mixing valve when the flow rate is changed in a non-temperature setting range where it is not necessary to prevent overshoot and undershoot when the flow rate is changed. An object of the present invention is to provide a hot and cold water mixing apparatus capable of reducing the number of times of using the means and reducing the power consumption.

A fifth object is that when the temperature deviation at the time of changing the flow rate is on the negative side, ie, undershoot occurs, the opening of the mixing valve is not adjusted at the time of changing the flow rate, so that the opening of the mixing valve is excessively adjusted. An object of the present invention is to provide a hot and cold water mixing apparatus that prevents overshoot caused by the water and that is safer.

[0009]

To achieve the first object, a hot water mixing apparatus of the present invention comprises a mixing valve for adjusting a mixing ratio of hot water and water, and mixing valve driving means for driving the mixing valve. ,
Flow control valve for controlling flow rate, flow control valve driving means for driving the flow control valve, mixing valve control means for controlling driving of the mixing valve driving means, flow control valve control means for controlling driving of the flow control valve And hot water temperature detecting means provided downstream of the mixing valve, hot water temperature setting means for setting the mixed hot water temperature, hot water setting means for setting the mixed hot water amount, and a set temperature set by the hot water setting means. A deviation detecting means for calculating a deviation of the mixed hot water temperature detected from the hot water temperature detecting means, and a mixing valve for calculating an energizing amount of the mixing valve according to the deviation calculated by the deviation detecting means and outputting it to the mixing valve control means A flow rate for outputting the amount of bias of the flow control valve to the flow control valve control means in response to an input signal from the bias amount setting means and the hot water amount setting means, and outputting the bias amount of the mixing valve to the mixing valve control means. And an adjustment urging amount setting means.

In order to achieve the second object, a hot water mixing apparatus according to the present invention is arranged such that a mixing valve and a flow control valve are opened via a flow control urging amount setting means in response to an input signal from a hot water setting means. When the degree is adjusted, the deviation storage means for correcting or storing the maximum deviation detected by the deviation detection means and the input signal from the hot water temperature setting means within a predetermined time, and the input signal from the hot water temperature setting means. The apparatus is provided with a flow rate control bias amount setting means for calculating, setting and outputting the bias amount of the mixing valve by inputting the corresponding storage deviation from the deviation storage means.

In order to achieve the third object, the hot and cold water mixing apparatus according to the present invention is arranged such that when the deviation stored in the deviation storage means is smaller than a predetermined value, the mixing valve control is performed by the urging amount setting means at flow rate adjustment. A memory deviation selecting means for inhibiting output to the means.

In order to achieve the fourth object, the hot water mixing apparatus according to the present invention is configured such that when the hot water temperature set by the hot water setting means is in a non-setting temperature range, the urging amount setting means at the time of flow rate adjustment is used. There is provided a set temperature selecting means for prohibiting output to the mixing valve control means.

In order to achieve the fifth object, the hot and cold water mixing apparatus according to the present invention is arranged such that when the deviation stored in the deviation storage means is negative, the flow rate adjustment-time biasing amount setting means changes the flow from the urging amount setting means to the mixing valve control means. A negative deviation selecting means for inhibiting the output is provided.

[0014]

The hot and cold water mixing apparatus of the present invention has the above-described structure.
In response to the input signal for changing the flow rate, the valve opening of the flow control valve is started to be adjusted, and the hot water temperature deviation that occurs in accordance with the amount of bias of the flow control valve is predicted. By driving the mixing valve based on the above, overshoot and undershoot due to a change in the flow rate are prevented.

Further, in the water / water mixing apparatus of the present invention, when the overshoot and the undershoot occur due to the flow rate change, the maximum deviation corresponding to the flow rate change input signal is corrected, and the hot water mixing apparatus according to the flow rate change input signal is provided. By adjusting the opening of the mixing valve when the flow rate is changed based on the maximum deviation stored and stored, overshoot and undershoot due to the flow rate change can be reliably prevented under any use condition.

Further, the hot and cold water mixing apparatus of the present invention has the above-described configuration, and does not cause overshoot and undershoot when changing the flow rate, or when the user does not feel the maximum deviation (temperature change), Since the opening of the mixing valve is not adjusted when the flow rate is changed, the number of times of using the mixing valve driving means and the power consumption are reduced.

In addition, the hot water mixing apparatus of the present invention, by the above-described configuration, adjusts the opening of the mixing valve when changing the flow rate in a non-temperature setting range where it is not necessary to prevent overshoot and undershoot when changing the flow rate. The absence of such an arrangement further reduces the number of times the mixing valve driving means is used and the power used.

Further, according to the above configuration, when the temperature deviation at the time of changing the flow rate is negative, that is, when the undershoot occurs, the mixing valve valve opening at the time of changing the flow rate is not adjusted. This is intended to prevent overshoot due to excessive adjustment of the valve opening.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing a first embodiment of the present invention. In FIG. 1, reference numeral 16 denotes a water heater that supplies hot water via a hot water supply pipe 17, and the hot water supply pipe 17 communicates with a mixing valve 18. The mixing valve 18 has a hot water supply pipe 17 and a water supply pipe 19.
Hot water and water are respectively supplied from The mixing valve 18 is driven by a stepping motor 20 as mixing valve driving means provided outside the mixing valve 18 to adjust the mixing ratio of hot water and water. Reference numeral 21 is a hot water temperature detecting means provided downstream of the mixing valve 18 for detecting the temperature of the mixed hot water. 2
Reference numeral 2 denotes a flow rate control valve for controlling the flow rate of the hot water mixed by the mixing valve 18, which also has a water stopping function. The flow control valve 22 is driven by a stepping motor 23 that is a flow control valve driving unit provided outside the flow control valve 22. The mixed hot water whose temperature and flow have been adjusted is discharged from the tap hole 24.

Reference numeral 25 denotes an operation unit. Hot water temperature setting means 26 for the user to set the hot water temperature, and hot water quantity adjusting means 27 for setting the flow rate of the hot water and setting the start and stop of hot water supply.
Is provided. Reference numeral 28 denotes a deviation detecting means for detecting a deviation ΔT between the mixed hot water temperature T detected by the hot water temperature detecting means 21 and the set temperature Ts set by the hot water setting means 26. The mixing valve urging amount setting means 29 calculates and sets the urging amount of the mixing valve 18 based on the deviation detected by the deviation detecting means 28, and provides the mixing valve control means 30 for controlling the driving of the stepping motor 20 to the mixing valve control means 30. Outputs momentum. Reference numeral 31 designates an urging amount of the flow control valve 23 in accordance with an input signal from the hot water setting means 27 and outputs the setting to a flow control valve control means 32 for controlling the driving of the stepping motor 23. The storage deviation ΔTm stored in the deviation storage means 33 is read in accordance with the input signal, and the storage deviation ΔTm is read.
This is a flow rate adjustment-time biasing amount setting unit that sets the biasing amount of the mixing valve 18 based on Tm and outputs the biasing amount to the mixing valve control unit 30. The deviation storage means 33 stores the deviation (storage deviation ΔTm) according to the input signal from the hot water amount setting means 27, and detects the deviation for a predetermined time only after the change of the hot water amount is input by the water amount setting means 27. Deviation from means 28
T is input, and the stored deviation ΔTm corresponding to the input signal is corrected based on the maximum deviation during T. Numeral 34 denotes a memory deviation selecting means for prohibiting the output from the flow rate adjustment energizing setting means 31 to the mixing valve control means 30 when the absolute value of the memory deviation ΔTm corresponding to the input signal is equal to or smaller than the predetermined deviation range ΔT0. is there. 35 indicates that the set temperature Ts is (1) and
This is a set temperature selecting means for prohibiting the output from the flow rate adjustment bias setting means 31 to the mixing valve control means 30 when the temperature is in the non-set temperature range shown in (2).

(1) Ts> Tmax (2) Ts> Tmin 36 prohibits the output from the bias setting means 31 during flow adjustment to the mixing valve control means 30 when the storage deviation ΔTm corresponding to the input signal is negative. It is a memory deviation selecting means.

The operation of the present embodiment in the above configuration will be described. During tapping, the temperature of the mixed hot water is detected by the hot water temperature detecting means 28, and the deviation detecting means 28 calculates a deviation ΔT from the set temperature Ts set by the hot water temperature setting means 25. The mixing valve urging amount setting unit 29 sets the urging amount of the mixing valve 18 based on the deviation ΔT obtained by the deviation detecting unit 28, and outputs the urging amount to the mixing valve control unit 30. The mixing valve control means 30 drives the stepping motor 20 by the urging amount set by the mixing valve urging amount setting means 29. The mixing valve 18 is driven by a stepping motor 20 to change the mixing ratio of hot water and water. As described above, the feedback control is performed so that the mixed hot water temperature becomes the set temperature.

FIG. 2 shows the operation when the flow rate change is selected by the hot water amount setting means 27 at the time of tapping. When the flow rate change is selected by the hot water amount setting means 27, a signal is output to the flow rate adjusting urging amount setting means 31. The flow rate adjusting urging amount setting means 31 sets and outputs the urging amount of the flow rate control valve 22 in accordance with an input signal from the hot water amount setting means 27, and stores a deviation in accordance with an input signal from the hot water amount setting means 27. The storage deviation ΔTm stored in the means 33 is input.
An example in which the difference ΔTm is stored in the deviation storage means 33 in accordance with the input signal is shown in Table 1 assuming that the water amount setting by the water amount setting means 27 has five stages.

[0025]

[Table 1]

In Table 1, the setting in one row is the setting before the change in the amount of hot water, and the setting in the first column is the setting after the change in the flow rate. For example, when the hot water amount setting means 27 changes the hot water amount setting from 3 to 5, ΔTm is −3.

After the storage deviation ΔTm input in response to the input signal from the hot water amount setting unit 27 is input to the deviation storage unit 33, first, the storage deviation ΔTm is stored in the storage deviation selection unit 34, and the absolute value of the storage deviation ΔTm is determined by the user. It is determined whether the difference is equal to or smaller than a set deviation range ΔT0 set as a deviation range that is not felt.
If the storage deviation ΔTm is equal to or smaller than the set deviation range ΔT0, the storage deviation selecting unit 34 prohibits the output of the energizing amount signal from the energizing amount setting unit 31 during flow rate adjustment to the mixing valve control unit 30.

Next, the negative deviation selecting means 36 determines whether the value of the stored deviation ΔTm is negative. If the stored deviation ΔTm is negative, the negative deviation selecting means 36 prohibits the output of the energizing amount signal from the energizing amount setting means 31 during flow rate adjustment to the mixing valve control means 30. This is because when the memory deviation ΔTm is negative and the bias amount of the mixing valve 18 in the direction of preventing the undershoot set from the memory deviation ΔTm (ie, increasing the mixing ratio of hot water) is excessive, the reverse occurs. This is because a highly dangerous overshoot occurs. In the present embodiment, when the memory deviation ΔTm is negative, the output of the energizing amount signal from the energizing amount setting means 31 during flow rate adjustment to the mixing valve control means 30 is prohibited. It is possible to prevent undershoot and reduce the danger of overshoot by correcting the amount of bias of the motor.

The set temperature selecting means 35 determines that the set temperature Ts does not belong to the set hot water temperature range (lower set hot water temperature Tmin, upper set hot water temperature Tmax) which requires prevention of overshoot and undershoot. ) Or a non-set hot water temperature range that satisfies (Equation 2). The set hot water temperature range is, for example, a hot water temperature range that is frequently used when a shower is used. Tmin = 35 ° C., Tmax = 42
° C. If the set temperature Ts is in the non-set hot water temperature range,
The set temperature selecting means 35 is a biasing amount setting means 31 for flow rate adjustment.
Output of the urging amount signal to the mixing valve control means 30 is prohibited.

Based on the determinations made by the storage deviation selecting means 34, the set temperature selecting means 35, and the negative deviation selecting means 36 listed above, the energizing amount signal from the energizing amount setting means 31 during flow rate adjustment to the mixing valve control means 30 is determined. If the output is not prohibited, the flow rate adjustment bias amount setting means 31 calculates and sets the bias amount of the mixing valve 18 based on the stored deviation ΔTm, and the mixing valve control means 3
Output to 0. The mixing valve control means 30 determines the input bias amount,
The stepping motor 20 is driven to change the mixing ratio of hot and cold water by the mixing valve 18.

In this embodiment, the storage deviation selecting means 34, the set temperature selecting means 35, and the negative deviation selecting means 36
The memory deviation ΔTm and the set temperature Ts are determined to inhibit the output of the energizing amount signal from the energizing amount setting means 31 during flow rate adjustment to the mixing valve control means 30. Depending on the hot water supply capacity of the machine 16, the pressure in the hot water supply pipe 17, the pressure in the water supply pipe 19, the pressure difference between the hot water supply pipe 17 and the water supply pipe 19, any or all of the selection means may not be provided.

FIG. 4 shows a hot water amount setting signal 27 when the mixed hot water amount is changed.
Since the mixing valve 18 is not driven in response to the signal from the controller and the mixing valve is driven in accordance with the deviation ΔT after the deviation ΔT is detected by the deviation detecting means 33, a response delay occurs, resulting in undershoot and overshoot ( The deviation ΔT) becomes large (FIG. 5 shows a case where undershoot and overshoot occur in reverse when the flow rate is changed).

FIG. 3 shows a hot water amount setting signal 27 when the mixed hot water amount is changed.
The biasing amount of the mixing valve 18 is set in accordance with the signal from the controller and the mixing valve 18 is driven.
The response delay until T is detected is eliminated, and the deviation ΔT at the time of changing the mixed hot water amount is reduced. In addition, the time during which the mixed hot water temperature at the time of changing the mixed hot water amount converges to the set temperature is also reduced.

When the flow rate change is selected and a signal is input from the hot water amount setting means 27 to the flow rate change urging amount setting means 31, the deviation storage means 33 stores the deviation detection means 28 for a predetermined time.
, The deviation ΔT between the mixed hot water temperature and the set temperature Ts is input, and the maximum deviation between them is detected. Thereafter, based on the detected maximum deviation, the storage deviation ΔTm corresponding to the change in the flow rate setting is corrected, and the storage is updated. By providing the learning function to the deviation storage means 33, the deviation ΔT at the time of changing the flow rate setting can be further reduced.

As described above, according to the present embodiment, when there is an input signal for changing the hot water setting from the hot water setting means 27, the drive of the flow rate control valve 23 is started and the urging according to the input signal is performed. Since the mixing valve 18 is driven by the amount, the delay in detecting the deviation ΔT can be prevented, and the overshoot and undershoot occurring after the change of the mixed hot water amount, that is, the flow rate change can be reduced. In particular, when the stepping motor 20 is driven at a low speed, the effect is great.

When there is an input signal for changing the hot water setting from the hot water setting means 27, the drive of the flow rate control valve 22 is started, and the stored deviation stored in accordance with the input signal from the hot water setting means 27. Mixing valve 1 based on ΔTm
Since the energizing amount of No. 8 is determined and the mixing valve 18 is driven, the overshoot and undershoot occurring after the change of the mixed hot water amount, that is, after the change of the hot water amount, can be reduced under any conditions. In addition, every time the hot water amount setting is changed, the deviation ΔT is input from the deviation detecting means 28 for a predetermined time, and the stored deviation ΔTm is corrected and updated based on the maximum deviation during that time. And undershoots are reduced each time they are used, and overshoots and undershoots can be reduced even when the use conditions and the like change.

Further, when it is determined by the storage deviation selecting means 34 that the absolute value of the storage deviation ΔTm is equal to or smaller than the set deviation range ΔT0 set as the deviation range which the user does not feel, the storage deviation selecting means 34 adjusts the flow rate. Since the output of the biasing amount signal from the time biasing amount setting means 31 to the mixing valve control means 30 is prohibited and the mixing valve 18 is not driven by the flow rate change signal, the number of times the stepping motor 20 is used is reduced, and the life thereof is reduced. Can be extended, and the power consumption can be reduced.

In addition, when the set temperature Ts is within the non-temperature set range when the flow rate is changed by the set temperature selecting means 35, the mixing valve 18 is not driven by the flow rate change input signal, so that the stepping motor 20 can be used more times. , The life thereof can be extended, and the power consumption can be reduced.

If the negative deviation selecting means 36 determines that the stored deviation ΔTm is negative, the mixing valve 18 is not driven by the flow rate change input signal, so that the bias amount of the mixing valve 18 is set to be excessive. In this case, overshoot is reliably prevented, and safety can be improved.

In this embodiment, the storage deviation ΔTm
Is negative, the output of the urging amount signal from the urging amount setting means 31 at the time of flow adjustment to the mixing valve control means 30 is prohibited. However, the urging amount to the mixing valve control means 30 is reduced and corrected. In addition, undershoot can be prevented, and the risk of overshoot can be reduced.

[0041]

As described in detail above, the hot water mixing apparatus of the present invention has a mixing valve for adjusting the mixing ratio of hot water and water, mixing valve driving means for driving the mixing valve, and a flow control valve for controlling the flow rate. A flow control valve driving means for driving the flow control valve, a mixing valve control means for controlling the drive of the mixing valve drive means, a flow control valve control means for controlling the drive of the flow control valve, and a downstream side of the mixing valve. Detected from the hot water temperature detecting means, the hot water setting means for setting the mixed hot water temperature, the hot water setting means for setting the mixed hot water quantity, and the set temperature and hot water detecting means set by the hot water setting means. Deviation detecting means for calculating a deviation of the mixed hot water temperature, and a mixing valve urging amount setting means for calculating an energizing amount of the mixing valve in accordance with the deviation calculated by the deviation detecting means and outputting it to the mixing valve control means, In accordance with the input signal from the hot water setting means, the flow control valve control means Outputs the biasing amount of the amount adjusting valve has the following effects because it is constituted from the flow regulation during energizing amount setting means for outputting a mixing valve control means energizing amount of mixing valve.

(1) When there is an input signal for changing the flow rate setting from the flow rate setting means, the drive of the flow rate control valve is started and the mixing valve is driven by the bias amount corresponding to the input signal. Can be prevented, and overshoot and undershoot occurring after a change in the amount of mixed hot water, that is, a change in the flow rate can be reduced. Especially mixing valve driving means 2
When 0 is for low-speed driving, the effect is great.

(2) When there is an input signal for changing the flow rate setting from the flow rate setting means, the drive of the flow rate control valve is started, and the storage deviation ΔTm stored according to the input signal from the flow rate setting means is changed. Since the energizing amount of the mixing valve is determined based on the driving of the mixing valve, the overshoot and the undershoot occurring after the change of the mixed hot water amount, that is, the flow rate change, can be reduced regardless of the conditions used. Further, every time the flow rate setting is changed, the deviation ΔT is inputted from the deviation detecting means for a predetermined time, and the stored deviation ΔTm is corrected and updated based on the maximum deviation during the period. Each time the chute is used, it is reduced, and overshoots and undershoots can be reduced even if the use conditions change.

(3) The storage deviation Δ by the storage deviation selecting means
When it is determined that the absolute value of Tm is equal to or smaller than the set deviation range ΔT0 set as the deviation range that the user does not feel,
The memory deviation selecting means prohibits the output of the urging amount signal from the urging amount setting means at the time of flow rate adjustment to the mixing valve control means and does not drive the mixing valve by the flow rate change input signal. And the service life can be extended. Further, by reducing the number of times the mixing valve driving means is used, it is possible to reduce power consumption.

(4) Set temperature T by set temperature selecting means
When s is in the non-temperature setting range where reduction of overshoot and undershoot is not required at the time of changing the flow rate, the mixing valve is not driven by the flow rate change input signal. In addition, the life can be extended, and the power consumption can be further reduced.

(5) The stored deviation Δ is calculated by the negative deviation selecting means.
When it is determined that Tm is negative, the mixing valve is not driven by the flow rate change input signal, so that the overshoot when the energizing amount of the mixing valve is set excessively is reliably prevented, and safety is improved. Improvement can be achieved.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a hot water mixing apparatus showing an embodiment of the present invention.

FIG. 2 is a flowchart of a control operation when changing the flow rate setting of the hot and cold water mixing apparatus.

FIG. 3 is a view showing a tapping result by the hot water mixing apparatus.

FIG. 4 is a view showing a result of tapping by a conventional hot water mixing apparatus.

FIG. 5 is a view showing a result of tapping by a conventional hot water mixing apparatus.

FIG. 6 is a configuration diagram of a conventional hot water mixing apparatus.

[Explanation of symbols]

 Reference Signs List 18 mixing valve 20 stepping motor (mixing valve driving means) 21 hot water temperature detecting means 22 flow rate control valve 23 stepping motor (flow rate controlling valve driving means) 26 hot water temperature setting means 27 hot water quantity setting means 28 deviation detecting means 29 mixing valve biasing amount Setting means 30 Mixing valve control means 31 Flow rate adjustment bias amount setting means 32 Flow control valve control means 33 Deviation storage means 34 Storage deviation selection means 35 Set temperature selection means 36 Negative side deviation selection means

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) F24D 17/00 F24H 9/00

Claims (5)

(57) [Claims] 1. A mixing valve for adjusting a mixing ratio of hot water and water, mixing valve driving means for driving the mixing valve, a flow control valve for controlling a flow rate, and a flow control valve driving for driving the flow control valve Means, a mixing valve control means for controlling the driving of the mixing valve driving means, a flow rate control valve controlling means for controlling the driving of the flow rate regulating valve, and a hot water temperature detecting means provided on the downstream side of the mixing valve. Hot water setting means for setting the mixed hot water temperature, hot water setting means for setting the mixed hot water quantity, and a difference between the set temperature set by the hot water setting means and the mixed hot water temperature detected by the hot water temperature detecting means. Deviation calculating means for calculating, an energizing amount of the mixing valve calculated in accordance with the deviation calculated by the deviation detecting means, and an energizing amount setting means for mixing valve for outputting to the mixing valve controlling means; The flow control valve control according to an input signal from Outputs the biasing amount of the flow control valve in stage, hot and cold water mixing device which includes a flow regulation during energizing amount setting means for outputting to the mixing valve control means energizing amount of the mixing valve. 2. When a valve opening of the mixing valve and the flow rate control valve is adjusted via the flow rate adjustment amount setting means by an input signal from the hot water quantity setting means, a predetermined time is required. Deviation storage means for correcting or storing the maximum deviation detected by the deviation detection means and the input signal from the hot water temperature setting means; and storing the storage deviation according to the input signal from the hot water temperature setting means in the deviation storage means. 2. The hot and cold water mixing apparatus according to claim 1, further comprising a flow rate control biasing amount setting means for calculating, setting, and outputting the biasing amount of the mixing valve. 3. A storage deviation selecting means for prohibiting an output from the flow rate adjustment energizing amount setting means to the mixing valve control means when the deviation stored in the deviation storage means is smaller than a predetermined value. 3. The hot and cold water mixing device according to 2. 4. A set temperature selecting means for inhibiting output from the urging amount setting means at the time of flow rate adjustment to the mixing valve control means when the set hot water temperature set by the hot water temperature setting means is in the non-set temperature range. The hot and cold water mixing apparatus according to claim 2 or 3. 5. A negative deviation selecting means for prohibiting an output from the flow rate adjusting bias amount setting means to the mixing valve control means when the deviation stored in the deviation storage means is negative. The hot and cold water mixing device according to claim 3 or 4.