JPH05149617A - Device to fill bath tub with hot water - Google Patents

Abstract

PURPOSE:To set simply a water level that is proper for a user by supplying hot water or cold water to a bath tub until a target water level that is set by a setting means of the supply hot water to the bath tub is reached and setting this target water level with reference to the maximum water level of the bath tub. CONSTITUTION:In a remote controller that gives an instruction to the control section of the subject device an operation switch that instructs start/stop of hot water supply operation, hot water filling switch 21 that instructs hot water filling in the bath tub, temperature setting device 22 that sets target temperature for the bath tub, water level setting device 24 that sets target water level in the hot water supply to the bath tub, and water level display device 25 that displays the target water level are provided. And a figure X in the memory of the water level display device 25 is provided to be able to display by how many centimeters the water level of the bath tub 1 is lower than the highest water level. Namely, in the water level setting device 24 the target water level can be set with reference to the highest water level in the bath tub, that is, the upper face of the bath tub wall, and in this way a proper water level is easily set.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bathtub hot spring provided with setting means for setting a target water level for hot water supply to a bathtub and hot water supply means for supplying hot water to the bathtub until the target water level is reached. Regarding the device.

[0002]

2. Description of the Related Art Conventionally, in a bathtub filling device as described above, a target water level has been set with reference to an installation level of a bath adapter for piping arranged on the bottom side of a bathtub wall.

[0003]

When the user sets the target water level, it is generally considered that the target water level is set by using the water level from the upper surface of the bathtub wall as a guide. However, in the above-mentioned conventional technique, since the water level from the installation level of the bath adapter is set as a guide, it is necessary to replace the water level appropriate for the user with the water level from the installation level of the bath adapter. Therefore, there is a possibility that an appropriate water level cannot be easily set. An object of the present invention is to solve the above-mentioned conventional drawbacks and to obtain a bathtub dipping device that allows a user to easily set an appropriate water level.

[0004]

In order to achieve this object, a characteristic construction of a bathtub dipping apparatus according to the present invention is such that the setting means sets the target water level based on the maximum water level of the bathtub. It is configured.

[0005]

The user may set the target water level by using the maximum water level of the bathtub, that is, the water level from the upper surface of the bathtub wall as a guide.

[0006]

Since the target water level can be set with reference to the water level from the upper surface of the bathtub wall, the user can easily set an appropriate water level. Therefore, the operability of the bathtub filling device can be improved.

[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,
Water amount sensor S1, Water temperature thermistor S that detects the supply water temperature
2, a constant flow valve 9, a hot water temperature thermistor S3 for detecting the hot water temperature on the outlet side of the hot water supply heat exchanger 3, a mixing valve 10 for mixing water and hot water, and a hot water temperature on the outlet side of the mixing valve 10. A hot water supply temperature thermistor S4 is installed. Reference numeral 11 in the figure denotes a hot water supply port connected to a hot water supply tap or the like. A water level sensor S5, a two-way valve 12, a circulation pump 13, a reheating thermistor S6 for detecting the hot water temperature in the reheating path W2, and a reheating path W2 passing through the reheating heat exchanger 4. ,
A water flow switch S7 for detecting the water flow in the additional heating passage W2 is provided. The downstream side of the hot water supply passage W1 is connected to the middle of the reheating passage W2 via the backflow prevention device A. 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 X on the scale of the water level indicator 25
Indicates how many centimeters the target water level Hs is below the maximum water level Hm of the bathtub 1. That is, the water level setter 24 is configured to set the target water level Hs with the highest water level Hm of the bathtub 1 as a reference.

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 is configured to control the operations of 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, hot water is supplied for a predetermined time (here, 2 minutes), the pump 13 is operated, and a cycle for determining whether or not the water flow switch S7 is turned on is repeated until the water flow switch S7 is turned on. The number of times n of the cycle is stored. Here, hot water is supplied with the two-way valve 12 opened (both conveyances). Next, hot water is supplied until the detection voltage Vx of the water level sensor S5 stops changing with the two-way valve 12 closed (single transport). When the detection voltage Vx of the water level sensor S5 stops changing, the water level in the bathtub 1 is the maximum water level H.
Judge that it has reached m. The detected voltage Vx of the water level sensor S5 at this time is stored as the voltage Vm corresponding to the highest water level Hm.

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, hot water is supplied for a set time (here, n × 2 minutes) with the two-way valve 12 opened (both conveyances). Next, the pump 13 is operated to determine whether or not the water flow switch S7 is turned on. O
If not, the abnormality process is executed. On the other hand, when the water flow switch S7 is turned on, hot water is supplied until the detected voltage Vx of the water level sensor S5 reaches the voltage Vs corresponding to the target water level Hs with the two-way valve 12 closed (single transport). Here, the voltage Vs is obtained based on Equation 1.

[0013]

## EQU1 ## Vs = Vm-K × X

Here, K is a constant for converting the number X set in the remote controller R into the detection voltage of the water level sensor S5. Detection voltage Vx of water level sensor S5
When the voltage reaches the voltage Vs, the hot water supply is stopped.

[Other Embodiment] In the above embodiment, the control unit C automatically stores the maximum water level Hm of the bathtub 1 as a reference in the trial operation. However, the hot water supply is manually performed until the maximum water level Hm is reached. Then, the detection voltage Vx of the water level sensor S5 at that time may be stored. In the above embodiment, the hot water supply was repeated for a predetermined period of time in both transports until the circulation became possible at the beginning of the trial operation, but a predetermined amount (for example, 1
The hot water may be supplied in increments of 0 liter.

It should be noted that reference numerals are added to the claims for convenience of comparison with the drawings, but the present invention is not limited to the structures 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.

[Explanation of symbols]

 1 Bathtub 3 Hot water supply means 24 Setting means Hs Target water level Hm Maximum water level

Claims (1)

[Claims] 1. A target water level (Hs) for supplying hot water to a bathtub (1)
Setting means (24) for setting the target water level (Hs)
A hot-water supply device (3) for supplying hot and cold water to the bathtub (1) until reaching the bathtub (1), wherein the setting means (24) sets the target water level (Hs) to the bathtub. (1) The bath water filling device configured to set the maximum water level (Hm) as a reference.