JPH05149623A - Hot water filling device for bathtub - Google Patents

Abstract

PURPOSE:To accurately bring a hot water level into coincidence with a target level even in a bathtub of a special shape by storing relationship between a quantity of supplying hot water to the bathtub and a level of the bathtub in a step until the level of the bathtub reaches a highest level of the bathtub, and controlling supply of the hot water based on the information. CONSTITUTION:A distance between a reference water level H0 and a highest level H9 is divided into nine of equal distance DELTAH in a trial operation, and the quantity of supplying hot water when a water level is raised by the distance DELTAH is stored in a storage means of a controller. An operation switch 20 for instructing start/stop of hot water supplying, a hot water filling switch 21 for instructing supply of hot water to a bathtub, a temperature setter 22 for setting a target temperature of the bathtub water, a water level setter 24 for setting a target level of the supply hot water to the bathtub and a level display unit 25 for displaying the target level are provided in a remote controller 8. The numbers on a scale of the unit 25 are '0'-'9' corresponding to the levels H0-H9. Thus, a water level higher by the distance DELTAH is set each time the number is increased by '1' by the operation of the setter 24, and the level of the supply hot water can be brought into coincidence with the target level.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a setting means for setting a target water level for hot water supply to a bathtub, a detecting means for detecting the amount of hot water supply to the bathtub, and a water level in the bathtub to reach the target water level. The present invention relates to a bathtub filling device, which is provided with control means for controlling hot water supply to the bathtub.

[0002]

2. Description of the Related Art In the case of controlling the water level in the bathtub by the amount of hot water supplied to the bathtub as in the above-described bathtub filling apparatus, it is necessary to obtain the relationship between the amount of hot water supplied to the bathtub and the water level. Conventionally, for example, a technique has been disclosed in which the cross-sectional area of the bathtub is obtained from the water level rise amount and the hot water supply amount, and hot water is supplied in an amount corresponding to the product of the distance from the bathtub bottom surface to the target water level and the cross-sectional area of the bathtub ( (See Japanese Patent Laid-Open No. 2-267456).

[0003]

In recent years, the number of bathtubs having a special shape has increased. In a bathtub with such a special shape,
Since the cross-sectional area is not constant, the above conventional technique cannot be applied. An object of the present invention is to solve the above-mentioned drawbacks of the prior art and to obtain a bathtub dipping device capable of matching the hot water supply water level with a target water level even in a specially shaped bathtub.

[0004]

To achieve this object, a bathtub hot water filling device according to the present invention is characterized in that hot water is supplied to the bathtub in a process until the water level of the bathtub reaches the maximum water level of the bathtub. Storage means for storing the correspondence between the amount and the water level of the bathtub is provided, and the control means is configured to control hot water supply to the bathtub based on the information of the detection means and the storage means. Is.

[0005]

If the cross-sectional area of the bath at any water level up to the maximum water level of the bath can be known, the correspondence relationship between the amount of hot water supplied to the bath and the water level of the bath can be known. For example, the cross-sectional area of the bathtub at an arbitrary water level can be obtained by supplying hot water until the maximum water level of the bathtub is reached while detecting the water level of the bathtub during the trial operation. Further, the cross-sectional area of the bathtub may be obtained from the numerical value for designing the bathtub. If the cross-sectional area of the bathtub at an arbitrary water level can be known, the hot water supply amount required to supply hot water to the target water level can be calculated by integrating the cross-sectional area from the bottom of the bathtub to the target water level.

[0006]

[Effects of the Invention] Even in a bathtub having a special shape, it is possible to accurately know the hot water supply amount required to supply hot water up to the target water level, so that the hot water supply water level can be accurately matched with the target water level. Therefore, it is possible to improve the filling performance of the bathtub filling device.

[0007]

Embodiments of the present invention will be described with reference to the drawings.
As shown in FIG. 1, a hot water supply heat exchanger 3 as a hot water supply means for heating water supplied from a water supply port 2 to a bathtub 1 to supply hot water.
The heat exchanger 4 for reheating the hot water in the bathtub 1, the control unit C, and the remote controller R for giving a command to the control unit C are provided. It is configured. In the figure, 5 is a hot water supply burner and 6 is an additional heating burner. The bathtub dipping device K includes a forward pipe W3 and a return pipe W4.
And is connected to the bathtub 1 via.

A description will be given of the pipeline in the bathtub filling device K. In the hot water supply path W1 passing through the hot water supply heat exchanger 3,
A water amount sensor S1 as a detecting means for detecting the amount of hot water supplied to the bathtub 1, a water temperature thermistor S2 for detecting the water supply temperature, a constant flow valve 9, and a hot water temperature thermistor S3 for detecting the hot water temperature on the outlet side of the hot water supply heat exchanger 3. , Mixing valve 1 for mixing water and hot water
0, and a hot water supply temperature thermistor S4 for detecting the hot water temperature on the outlet side of the mixing valve 10 is interposed. Reference numeral 11 in the figure denotes a hot water supply port connected to a hot water supply tap or the like. Water level sensors S5, 2 are provided in the additional heating passage W2 passing through the additional heating heat exchanger 4.
A one-way valve 12, a circulation pump 13, an additional heating thermistor S6 for detecting the hot water temperature in the additional heating passage W2, and a water flow switch S7 for detecting the water flow in the additional heating passage W2 are provided. The downstream side of the hot water supply passage W1 is connected to the reheating passage W via the backflow prevention device A.
It is connected in the middle of route 2. Reference numeral 14 in the figure is a check valve.

As shown in FIG. 4, the remote controller R has an operation switch 2 for instructing start and stop of hot water supply operation.
0, a hot water switch 21 for commanding hot water to the bathtub 1, a temperature setter 22 for setting a target temperature of bath water, a temperature indicator 23 for displaying a target temperature of bath water, a target water level for hot water supply to the bath 1. A water level setter 24 as a setting means for setting Hs,
Water level indicator 2 for displaying target water level Hs for hot water supply to bathtub 1
5 etc. are provided. Number m on the scale of the water level indicator 25
5, 0 to 9 are provided, 0 corresponds to the reference water level H0, and 9 corresponds to the highest water level H9 of the bathtub 1, respectively. Then, the standard water level H0 to the highest water level H9 is divided into 9 equal distances ΔH, and the distance Δ increases every time the number increases by 1.
The water level will be higher by H.

Next, the control configuration of the bathtub filling device K will be described. As shown in FIG. 1, the controller C includes a water amount sensor S1, a water temperature thermistor S2, a hot water temperature thermistor S3, a hot water supply temperature thermistor S4, a water level sensor S5, an additional heating thermistor S6, a water flow switch S7, and a remote controller R.
Are connected to each other. Then, the control unit C controls the hot water supply to the bathtub 1 by operating the mixing valve 10, the two-way valve 12 and the pump 13 on the basis of the preset information and various input information. ..

Next, the operation of the control section C in the trial run when the bathtub filling device K is installed will be described with reference to the flow chart shown in FIG. First, a predetermined amount (here, 10 liters) of hot water is supplied with the two-way valve 12 opened, and then the pump 13 is operated to repeat the cycle of determining whether or not the water flow switch S7 is turned on until the water flow switch S7 is turned on. .. The number of times n of the cycle and the water level at that time (corresponding to the reference water level H0) are stored. The hot water supply amount q0 before reaching the reference water level H0 is n × 10 (liter). Next, hot water is supplied until the maximum water level H9 is reached with the two-way valve 12 closed. Here, the distance between the reference water level H0 and the preset maximum water level H9 is divided into 9 equal distances ΔH, and the respective hot water supply amounts qm when the water level is raised by the distance ΔH are stored. When the maximum water level H9 is reached, the trial run ends. That is, the storage unit 101 is configured to store the correspondence relationship between the amount of hot water supplied to the bathtub 1 and the water level of the bathtub 1 in the process until the water level of the bathtub 1 reaches the maximum water level of the bathtub 1 using the control unit C. There is.

Next, the operation of the controller C in the automatic hot water supply will be described with reference to the flowchart shown in FIG. First, with the two-way valve 12 open, a set amount (here, n × 1
(0 liter) Hot water is supplied. Next, operate the pump 13,
It is determined whether or not the water flow switch S7 is turned on. If it is not turned on, the abnormality process is executed. On the other hand, when the water flow switch S7 is turned on, the water level at that time is read, and the hot water supply amount required to reach the target water level Hs is calculated based on the stored information. And, the required hot water supply amount is 2
Hot water is supplied with the one-way valve 12 open. That is, the control unit C is used to adjust the water level of the bathtub 1 to the target water level Hs.
A control means 100 for controlling hot water supply to the hot water is configured.
If there is remaining hot water and the water level at the time when the set amount of hot water is supplied is between H1 and H2, the hot water supply amount required to reach H2 should be linearly interpolated between H1 and H2. Ask by.

[Other Embodiments] In the above embodiment, in the process until the water level of the bathtub 1 reaches the maximum water level of the bathtub 1 by supplying hot water until the maximum water level of the bathtub is detected while detecting the water level of the bathtub during the trial run. Hot water supply to bathtub 1 and bathtub 1
Although the correspondence relationship with the water level of is calculated, it may be calculated from the numerical value in the design of the bathtub.

It should be noted that reference numerals are given in the claims for convenience of comparison with the drawings, but the present invention is not limited to the configuration of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a block diagram of the overall configuration

[Fig. 2] Flow chart of trial operation

[Fig. 3] Flow chart of automatic hot water supply

FIG. 4 is a front view of the remote controller.

FIG. 5 is an explanatory diagram of the water level in the bathtub.

[Explanation of symbols]

 1 Bath 24 Setting means 100 Control means 101 Storage means S1 Detection means Hs Target water level

Claims (1)

[Claims] 1. A target water level (Hs) for supplying hot water to a bathtub (1)
Setting means (24) for setting, a detecting means (S1) for detecting the amount of hot water supplied to the bathtub (1), and the bathtub (1) so that the water level of the bathtub (1) becomes the target water level (Hs). 1. A bathtub hot-water filling device provided with a control means (100) for controlling hot water supply to 1), wherein the water level of the bathtub (1) reaches a maximum water level of the bathtub (1). A storage means (101) is provided for storing a correspondence relationship between the amount of hot water supplied to the bathtub (1) and the water level of the bathtub (1), and the control means (100) is provided with the detection means (S1) and the storage means. A bathtub filling device configured to control hot water supply to the bathtub (1) based on the information of (101).