JPH06249499A - Automatic hot water filling device - Google Patents

Abstract

PURPOSE:To finish an accurate automatic hot water filling at a bathing planned time by setting an automatic hot water filling starting time using a average value of automatic hot water filling flow rates which are done when there is residual water in a bathtub. CONSTITUTION:An automatic hot water filling flow rate memory unit 29 stores the flow rate of an automatic hot water filling each time the automatic hot water filling is performed so that the water level may become a set water level for a bathtub when there is no residual water in the bathtub. An average automatic hot water filling flow rate operation means 30 operates the average value of the automatic hot water filling flow rates which are stored in the automatic hot water filling flow rate memory unit 29. An automatic hot water filling starting time setting means 35 obtains the automatic hot water filling starting time by the average automatic hot water filling flow rate, bathtub pouring out hot water feeding time, bathtub residual water heating up time, heating up time at the completion of the automatic hot water filling to the set water level, and a planned bathing time. In this way, the water level in the bathtub and hot water temperature are made to meet respective set values at the planned bathing time.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic water filling device which supplies a set amount of hot water to a bathtub and circulates the hot water to maintain a set temperature.

[0002]

2. Description of the Related Art As an example of an automatic water filling device that controls the water level in the bathtub and the hot water temperature to the bathtub set water level and the bathtub set hot water temperature at a set time, the applicant of the present application filed Japanese Patent Application No. 3-75.
Filed 933 first.

In this example, a scheduled bathing time is set in advance so that the reheating time is calculated based on the amount of water and a predetermined temperature difference when cold water is filled in the bath up to the set water level. Since the automatic operation is started backward from the scheduled time by the above-mentioned reheating time, it has an advantage that the automatic hot water filling operation is surely completed by the scheduled bath time regardless of the size of the bathtub.

Furthermore, since the warming operation is performed for a certain period of time after the scheduled bath time, the temperature becomes appropriate at the scheduled bath time.

[0005]

However, in the above-mentioned conventional example, the amount of water when the cold water is filled in the bath up to the set water level and the predetermined temperature difference are used without using the detection value of the water level sensor or the like. Although the reheating time is calculated, as described in the main text of the specification, the amount of water at the set water level is the amount of water required to be the set water level for the first automatic hot water supply stored in the control unit. Is based on. Therefore, if the amount of water stored in the control unit has an error compared with the exact amount of water required to reach the first set water level, the water level at the end of automatic filling has a drawback that it keeps the error. It was

Further, in the above-mentioned conventional example, the warming operation is performed by going back a predetermined time from the scheduled bathing time,
In other words, heating is performed so that the temperature of the hot water in the bathtub reaches the set temperature, but if the time when the warming operation ends is slightly before the scheduled bathing time, there will be a slight amount of hot water during that time. There was a drawback that the temperature decreased, and the temperature of the hot water at the scheduled bathing time was slightly lower than the set temperature.

Further, in the conventional example, when the scheduled bathing time is set to, for example, 2:00, the calculated automatic operation start time is, for example, 23:50, and the current time is, for example, the time. Despite the fact that it was 0:10, it was mistakenly judged that it was not at 23:50 and automatic filling was not performed, and there was a drawback that there was no filling in the bath at the scheduled bathing time. It was inconvenient for the person.

Further, in the conventional example, the calculated reheating time has not been specifically examined. Therefore, if the calculated reheating time is inaccurate due to a defect of the sensor, etc. However, it had the drawback that it was boiling up from the front, and that the automatic filling of water in the bathtub was not completed even at the scheduled bathing time, which was inconvenient for the user.

Therefore, an object of the present invention is to provide an automatic filling device which solves all the above-mentioned drawbacks.

[0010]

In order to solve the above problems, the present invention detects a bathtub, a hot water supply device for supplying hot water to the bathtub, a water level detecting means for detecting the water level of the bathtub, and a flow rate for supplying hot water to the bathtub. Flow rate detecting means, heating means for heating bath water, temperature detecting means for detecting the temperature of bath water, and control for controlling the water heater and the heating means by input signals of the water level detecting means and the temperature detecting means. Means, a scheduled bathing time setting means for presetting a scheduled bathing time in the control means, and a time required to reach the bathtub set water level and the bathtub set temperature at the scheduled bathing time, and the automatic filling start time is set. In an automatic water filling device having an automatic water filling start time setting means, an automatic water filling flow when the automatic water filling is performed so as to reach the bathtub set water level when there is no residual water in the bathtub. The first feature is that an automatic filling start time setting means for setting the automatic filling start time using the stored average value of the automatic filling flow rate (average automatic filling flow rate) is stored. .

Further, a bathtub drop hot water supply time A required to automatically fill the bathtub water level to a bathtub set water level and a bathtub residual water heating time B required to boil the residual water in the bathtub to the bathtub set temperature. , The set water level required to boil up to the set temperature of the bath after the automatic water filling to the set water level is defined as follows. Flow rate-remaining water flow rate) / automatic filling speed, bath residual water heating time B = remaining water flow rate x (tub set temperature-remaining water temperature) / heating means capacity, set water level boiling time at end of automatic filling C = Average automatic water filling flow rate x set water level Heat dissipation coefficient at the end of automatic water filling, start time of automatic water filling = (Bathing scheduled time-(Bathtub drop hot water supply time A + bathtub residual water heating time B + set water level automatic water filling end The second characteristic is that the time is defined by the raising time C)}.

Further, a time determining means for comparing the current time, the scheduled bath time, and the automatic water filling start time is provided, and the automatic water filling is started if the current time is within the range satisfying any of the following three conditions. The third feature is that the time determination means is provided. 1st condition: current time <scheduled bathing time <automatic filling time start time 2nd condition: automatic filling time <current time <scheduled bathing time 3rd condition: scheduled bathing time <automatic filling time <current time

Further, the bathtub, the hot water supply device for supplying hot water to the bathtub, the water level detecting means for detecting the water level of the bathtub, the flow rate detecting means for detecting the flow rate of hot water supplying to the bathtub, the heating means for heating the bathwater, and the bathtub. Temperature detection means for detecting the temperature of water,
The control means for controlling the hot water supply device and the heating means by the input signals of the water level detection means and the temperature detection means, the scheduled bath time setting means for presetting the scheduled bath time in the control means, and the scheduled bath time In an automatic water filling device having an automatic water filling start time setting means for calculating a time required to reach a bath water setting level and a bath temperature setting and setting an automatic water filling start time, If the calculation time required to do so is not within a predetermined range, the above-mentioned calculation time is corrected to a time within the predetermined range, and the automatic filling time is changed and set according to the corrected time. The fourth characteristic is that the total time changing means is provided.

[0014]

In the present invention, when the automatic filling is performed so that the set water level in the bath is reached when there is no residual water in the bath, the automatic filling flow is stored, and the stored automatic filling flow is stored. Since the automatic filling time is set using the average value (average automatic filling flow rate), the bath water level at the scheduled bathing time becomes accurate.

Further, the automatic hot water filling start time, the expected bath time, the bath water drop time A required to automatically fill the water level in the bath tub to the set water level, and the remaining water in the bath water to the tub set temperature are set. It is set by the bath water remaining boiling time B required to raise the temperature and the set water level automatic boiling time C required to raise the temperature to the bath setting temperature after automatically filling the bath to the set water level. In particular, since the above time C is corrected using the heat radiation coefficient at the end of automatic filling, the bathtub hot water temperature and the bathtub hot water level at the scheduled bath time completely match the bathtub set water level and the bathtub set temperature, respectively.

Further, a time determination means for comparing the current time, the scheduled bathing time, and the automatic water filling start time is provided, and the current time exists within the range of the three conditions described in claim 3. By doing so, the automatic hot-water filling is started, so there is no possibility that the automatic hot-water filling will not be performed even at the automatic hot-water filling start time.

Furthermore, if the calculation time required to reach the bath set water level and the bath set temperature is not within the predetermined range, the calculation time is corrected within the predetermined range.
It is no longer possible that the water will boil for hours before the scheduled bath time, or that the automatic filling of water in the bathtub has not ended even when the scheduled bath time has come.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a diagram showing the construction of an automatic water filling device according to the present invention. 1 is an automatic hot water filling device, which is provided with a hot water supply device 2 for supplying hot water to other taps such as a bathtub and a kitchen.

The hot water supply device 2 is provided with a main water passage 3, and the main water passage 3 is provided with a hot water heat exchanger 4 and a hot water temperature sensor 5 for detecting the temperature of hot water heated by the hot water heat exchanger 4. . The hot water supply heat exchanger 4 is heated by the hot water supply burner 6, and the amount of gas to the hot water supply burner 6 is set by opening the original solenoid valve 7.
The required gas amount is obtained by varying the opening of the proportional valve 8.

Reference numeral 9 denotes a drop-in hot water supply passage branched from the hot water supply temperature sensor 5 in the main water passage 3, which is provided with an opening / closing water solenoid valve 10 and a drop flow rate sensor 11 for detecting the drop flow rate dropped into the bath 19. ing.

The drop-in hot water supply passage 9 is connected to the additional heating circulation passage 12, and has a pump 13 for circulating hot water in the bathtub, a bath temperature sensor 14 for detecting the hot water temperature of the bathtub, a water level sensor 15 for detecting the water level of the bathtub, and a hot water temperature of the bathtub. Each of the additional heating heat exchangers 16 for heating the. Additional heat exchanger 16
Is heated by the additional heating burner 17, and the amount of gas to the additional heating burner 17 is obtained by opening the original solenoid valve 18.

The bathtub 19 is connected to the reheating circulation path 12.

Reference numeral 20 denotes a controller for controlling a controlled device such as the solenoid valve, which is connected to a remote controller 21.
In the remote controller 21, a display unit 22 for displaying the equipment operating state, reserved bath time, etc., an automatic water filling switch 23, a scheduled bath time setting switch 24, and a bath level setting switch 2
5, a bathtub temperature setting switch 26, and a current time setting switch 27.

FIG. 2 is an explanatory view showing the configuration of the controller 20 in detail. Reference numeral 28 is a current time setting section for setting the current time by a signal sent from the current time setting switch 27. Reference numeral 29 is an automatic water filling flow rate storage unit for storing the automatic water filling flow rate each time when the automatic water filling is performed so as to reach the bathtub set water level when there is no residual water in the bathtub. Here, the case where there is no residual water in the bathtub is when the water level sensor 15 is not issuing a water level detection signal. Reference numeral 30 denotes an average automatic filling water flow rate calculation means for calculating an average value of the automatic filling water flow rates stored in the automatic filling water flow rate storage unit 29, that is, an average automatic filling water flow rate.

Reference numeral 31 is a bathtub drop hot water supply time calculating means for calculating a bathtub drop hot water supply time A required for automatically filling the water level in the bathtub 19 to the water level set in the bathtub setting water level switch 25. Here, the bathtub drop hot water supply time A is calculated as follows. Bathing hot water supply time A = (average automatic water filling flow rate-remaining water flow rate) / automatic water filling speed ... Here, the automatic water filling speed means that the water solenoid valve 10 is opened and the water is heated by the hot water heat exchanger 14. It is the drop hot water supply flow rate per unit time when hot water is dropped into the bathtub 19 at the bathtub set hot water temperature to be supplied with hot water.

Reference numeral 32 denotes a bath residual water heating time calculation means for calculating a bath residual water heating time B required for heating the residual water in the bath 19 to a bath setting water level, which is a bath residual water heating time B. Is calculated as follows. Bath residual water heating time B = residual water flow rate x (tub set temperature-remaining water temperature) /
Additional heating heat exchanger heating capacity ...

Reference numeral 33 is a set water level automatic hot water filling end heating time calculation means for calculating a set water level automatic hot water filling end heating time C required to raise the temperature to the bathtub set temperature after automatic water filling to the bathtub set water level. Thus, the boiling time C at the end of the set water level automatic filling is calculated as follows. Boil-up time at the end of automatic water filling at the set water level C = average automatic water filling flow rate x heat dissipation coefficient at the end of automatic water filling at the set water level
...

Here, the heat dissipation coefficient at the end of the set level automatic filling is as follows. That is, when there is no residual water in the bathtub 19, the automatic water filling switch 23
When is pressed, hot water is automatically filled up to the bathtub set water level with the hot water temperature set by the bathtub set temperature switch 26. However, when the bathtub set water level is reached, the temperature drops below the bathtub set temperature due to heat dissipation. Therefore, it is the heat radiation coefficient per unit volume at the end of the set water level automatic filling that is used to predict the lowered bathtub hot water temperature from the outside air temperature and correct the bathtub hot water temperature to the bathtub set temperature. In addition, when there is no residual water in the bathtub 19, the time required for automatic hot water filling at the bathtub set temperature at the bathtub set temperature is almost constant, and the bathtub temperature per unit volume decreases during the fixed time. Is constant in proportion to the rate of decrease in the bath outside air temperature, and the heat dissipation coefficient is also corrected by the rate of decrease in the bath outside air temperature. If there is no water, it may be determined based on the amount of water required to reach the set water level in the bathtub. That is, the heating time at the end of the set water level automatic filling is proportional to the rate of decrease in the bath outside air temperature, and is proportional to the magnitude of the average automatic filling water flow rate. Further, as a method of detecting the temperature of the outside air of the bathtub, the ambient temperature in the appliance is detected by a temperature sensor
Alternatively, the outside air temperature may be predicted based on the detected value of the water temperature sensor (not shown in the present invention) on the water entering side of the hot water supply device 2, and the rate of decrease in the bath outside air temperature may be predicted from the predicted outside air temperature.

Reference numeral 34 is a scheduled bath time setting means for setting the scheduled bath time transmitted by the scheduled bath time setting switch 24 in the controller 20.

Reference numeral 35 denotes an automatic filling start time setting means, which is the average automatic filling flow rate, the bath hot water drop time A, the bath residual water heating time B, and the set water level automatic water filling end heating time C. And the estimated bathing time. Here, the automatic filling start time is calculated as follows. Start time of automatic water filling = scheduled time of bathing- (hot water supply time A in bathtub + time of remaining hot water in bathtub B + set water level time of hot water at the end of automatic water filling C) ...

Reference numeral 36 is a time determination means for comparing the current time, the scheduled bathing time, and the automatic hot water filling start time. If the current time is within the range of the following three conditions, the time determination means 36 starts the automatic filling operation.

As a first condition, as shown in FIG. 3, current time <scheduled bathing time <automatic water filling start time, and as a second condition, as shown in FIG. 4, automatic water filling start time <current time <current time <
Scheduled bathing time, as shown in FIG. 5 as the third condition, scheduled bathing time <automatic water filling start time ≦ current time.

That is, in FIGS. 3, 4, and 5, the time is displayed by using the 24-hour display from 0:00 to 24:00. That is, when the current time reaches the automatic water filling start time calculated from the scheduled bath time, the automatic water filling hot water supply is started, and as shown in FIG. 4, the automatic water filling hot water supply is started if the current time is present. It is a well-known fact.

However, the scheduled bath time set as shown in FIG. 3 or FIG. 5 is, for example, time 3:00, and the automatic filling start time calculated based on the scheduled bath time is time 23:00. If the current time is time 0:
In the case of FIG. 3, which is 30, or the current time is time 23:
In the case of FIG. 5, which is 30, the automatic filling time 2
Despite past 3:00, next time is 23:
In the conventional example, there is a drawback that the automatic hot water filling does not start until 00, and thus the automatic hot water filling does not end at the scheduled bathing time of 3:00. The first condition is to correct the shortcoming. Alternatively, it is the content of claim 3 of the present invention that the automatic hot water filling is attempted when the current time is present in the third condition.

In FIG. 6, the vertical axis shows the total time for automatic filling, and the horizontal axis shows the amount of water required to reach the set bath level, that is, the average automatic filling amount. Here, the total automatic filling time is the total time of the bath hot water supply time A, the bath residual water heating time B, and the set water level automatic water filling end heating time C. Here, the total automatic filling time with respect to the average automatic filling flow rate exists within the range of the straight line and the shaded portion surrounded by the straight line.

The straight line shows the total time of automatic filling when there is residual water in the bathtub up to the set water level of the bathtub and the residual water temperature drops close to the outside air temperature of the bathtub. That is,
The additional heating heat exchanger 17 has a smaller heating capacity than the hot water supply heat exchanger 4, and therefore, when there is cold water in the bathtub up to the set water level of the bath, it has the longest total time for automatically filling the hot water to the set temperature. Of.

The straight line shows the case where the total time for automatic filling is the shortest. In other words, the straight line shows the state where the automatic hot water filling by the user at the bathtub set temperature has already been completed up to the bathtub set water level at the automatic water filling start time, and the automatic water filling total time in the straight line is the set water level. It shows the heating time at the end of automatic filling.

In FIG. 6, if the total automatic filling time calculated by the controller is in the straight line and the shaded area surrounded by the straight line, the automatic filling start time is calculated using the calculated total automatic filling time. Should be set.

However, in the case where the calculated automatic filling time does not exist in the shaded area in FIG.
It is determined that an erroneous calculation result has been calculated due to noise caused by electromagnetic waves, noise generated by peripheral devices, or a detection error of a sensor or the like, and the automatic water filling total time changing means 37
Thus, the calculation result is corrected within the range shown by the shaded area, and the corrected calculation result is transmitted to the automatic filling start time setting means 35 to change the automatic filling start time.

[0041]

According to the present invention, the set water level of the bathtub and the required amount of hot water are corrected using the average automatic filling water flow rate, so that the detection error of the flow rate sensor is corrected, and thus the bath water level at the end of automatic filling water is It exactly matches the water level set in the bathtub.

Further, in the present invention, the total automatic filling time is calculated based on the bath-filling time A for dropping the hot water, the time B for boiling the remaining water in the bath, and the setting time C for the time when the automatic filling is completed. The automatic filling time is set according to the total filling time, and in particular, the boiling time C at the end of the set level automatic filling is calculated with the average automatic filling flow rate using the heat dissipation coefficient at the set level automatic filling. Since the correction is made, the total time for automatic filling will be accurate, so that at the scheduled bath time, the water level in the bathtub and the hot water temperature will completely match their respective set values.

Further, in the present invention, since the time determination means for starting the automatic filling is provided if the current time is within the range satisfying any of the three conditions described in claim 3,
The drawback that automatic filling will not start even when the automatic filling time has come is completely eliminated.

Further, in the present invention, when the calculated total time for automatic filling is not within a predetermined fixed range, that is, an erroneous calculation result is calculated due to a detection value error of a sensor or noise due to electromagnetic waves. It is assumed that the automatic filling time is corrected within the above-mentioned fixed range, and the automatic filling start time is changed and set according to the corrected time, so it is heated for hours before the scheduled bath time,
Alternatively, it is possible to eliminate the dissatisfaction that the automatic filling is not completed at the scheduled bath time.

In short, in the automatic water filling apparatus of the present invention, accurate automatic water filling is completed at the scheduled bathing time even if there is a calculation error due to a detection error of a sensor or the like or noise.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of an automatic water filling device of the present invention.

FIG. 2 is a diagram showing a configuration diagram of a controller.

FIG. 3 is a diagram showing a relationship among a current time, a scheduled bath time, and an automatic hot water filling start time.

FIG. 4 is a diagram showing a relationship among a current time, a scheduled bath time, and an automatic hot water filling start time.

FIG. 5 is a diagram showing a relationship among a current time, a scheduled bath time, and an automatic hot water filling start time.

FIG. 6 is a diagram showing the relationship between the total time for automatic filling and the average automatic filling amount.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Automatic water filling device 2 Hot water supply device 11 Flow rate detection means 15 Water level detection means 19 Bathtub 20 Controller 29 Automatic water filling flow rate storage unit 30 Average automatic water filling flow rate calculation means 31 Bathtub drop hot water supply time calculation means 32 Bathtub residual water heating Time calculation means 33 Set water level automatic water filling end boiling time calculation means 34 Scheduled bath time setting means 35 Automatic water filling start time setting means 36 Time determination means 37 Automatic water filling total time changing means

Claims (4)

[Claims] 1. A bathtub, a hot water supply device for supplying hot water to the bathtub, a water level detecting means for detecting a water level of the bathtub, a flow rate detecting means for detecting a flow rate of supplying hot water to the bathtub, a heating means for heating the bathwater, and a bathtub. Temperature detecting means for detecting the temperature of water, control means for controlling the water heater and the heating means by input signals of the water level detecting means and the temperature detecting means, and a bath for presetting a scheduled bath time in the control means Automatic water filling provided with a scheduled time setting means and an automatic water filling start time setting means for calculating the time required to reach the bathtub set water level and the bathtub set temperature at the bathing scheduled time In the device, the automatic filling water flow rate when automatic filling is performed so as to reach the bathtub set water level when there is no residual water in the bathtub is stored each time, and the average value of the stored automatic filling water flow rate ( An automatic filling device, comprising an automatic filling start time setting means for setting an automatic filling start time using an average automatic filling flow rate). 2. A bathtub drop hot water supply time A required to automatically fill the bathtub water level to the bathtub set water level, and a bathtub residual water heating time B required to boil the residual water in the bathtub to the bathtub set temperature. , The boiling time C at the end of the automatic water filling at the set water level required to raise the temperature to the set temperature of the bath after automatic filling to the set water level of the bathtub is defined as follows:
Bathing hot water supply time A = (average automatic filling water flow-remaining water flow rate) / automatic filling water speed, remaining bath water heating time B =
Residual water flow rate x (tub set temperature-remaining water temperature) / heating means capacity, set water level boiling time at the end of automatic water filling C = average automatic water filling flow rate x heat dissipation coefficient at the end of set water level automatic water filling,
Claims characterized in that the automatic filling time is defined by {scheduled bathing time- (bathtub hot water supply time A + bathtub residual water heating time B + set water level automatic water filling end heating time C)}. The automatic water filling device according to item 1. 3. A time determination means for comparing the current time, the scheduled bathing time, and the automatic water filling start time, and the automatic water filling is started if the current time is within a range satisfying any of the following three conditions. An automatic filling device according to claim 1 or 2, further comprising a time determination means. 1st condition: current time <scheduled bathing time <automatic filling time start time 2nd condition: automatic filling time <current time <scheduled bathing time 3rd condition: scheduled bathing time <automatic filling time <current time 4. A bathtub, a hot water supply device for supplying hot water to the bathtub, a water level detecting means for detecting the water level of the bathtub, a flow rate detecting means for detecting a flow rate of supplying hot water to the bathtub, a heating means for heating the bathwater, and a bathtub. Temperature detecting means for detecting the temperature of water, control means for controlling the water heater and the heating means by input signals of the water level detecting means and the temperature detecting means, and a bath for presetting a scheduled bath time in the control means Automatic water filling provided with a scheduled time setting means and an automatic water filling start time setting means for calculating the time required to reach the bathtub set water level and the bathtub set temperature at the bathing scheduled time In the device, if the calculation time required to reach the bathtub set water level and the bathtub set temperature is not within a predetermined range, the calculation time is corrected to a time within the predetermined range, and the correction is performed. An automatic water filling device comprising an automatic water filling total time changing means for changing and setting the automatic water filling start time according to the set time.