KR20190028150A - Hot water supply device with bath filling function and Control method thereof - Google Patents

Abstract

An object of the present invention is to provide a method for controlling a hot water supply device that has a bathtub filling function, which can supply a bathtub with hot water so that the temperature of hot water with which the bathtub is filled can be maintained at a temperature desired by a user. The hot water supply device (100) having a bathtub filling function includes a water heater (100a) heating direct water to supply hot water, a direct water pipe (10) for supplying direct water to the water heater (100a), a heat exchanger (20) heating the direct water flowing in through the direct water pipe (10), a hot water pipe (30) for supplying the hot water heated by the heat exchanger (20) to a bathtub (40), and a control unit (90) performing control such that the temperature of the hot water supplied to the bathtub (40) is set to a temperature higher by a compensation temperature than the bathtub hot water temperature and the hot water is supplied to the bathtub (40) by applying the compensation temperature reflecting the completion time of bathtub filling until hot water of the bathtub hot water flow as a target flow of the bathtub (40) is filled and the bathtub hot water temperature as a target temperature of the hot water with which the bathtub (40) is to be filled.

Description

Technical Field The present invention relates to a hot water supply device having a bathtub filling function and a control method thereof,

The present invention relates to a hot water supply apparatus having a bathtub filling function and a control method thereof, and more particularly, to a hot water supply apparatus having a bathtub filling function capable of maintaining the temperature of water in a bathtub at a user- .

The hot water supply device is a device for heating hot water to a set temperature within a short time and supplying the hot water to the user conveniently.

1, a general hot water supply device 1 includes a water heater 1a for heating hot water to supply hot water, a water straight pipe 2 for supplying cold water to the water heater 1a, And a hot water pipe 4 for supplying hot water heated in the heat exchanger 3 to the bathtub 5. The hot water pipe 4 is connected to the heat exchanger 3 through a heat exchanger 3 for heating the direct water introduced through the heat exchanger 3 by the heat of combustion of the burner. The hot water supply device is configured to burn oil through a burner using oil or gas as a fuel, heat the water using the heat of combustion generated in the burning process, and provide the heated water according to the user's need .

The environment and the manner in which the user uses hot water can vary widely. In general household use, there is a wide variety in use in the kitchen, such as cooking and washing dishes, and use in bathrooms such as toiletries, showers, footbaths, half baths, and whole baths. As the use environment and method of hot water are diversified, the demand of the user increases, and various functions are added to the hot water supply device according to the demand of the user.

One of these functions is to fill bathtub with hot water for half bath and full bath. When the user sets the temperature and the flow rate of the hot water to be filled in the bath in consideration of the size of the bathtub, the hot water supply device supplies the hot water of the set temperature and measures the flow rate of the hot water supplied When the flow rate of the set hot water is exceeded, it is notified by the sound of a speaker or a buzzer.

When the bathtub is filled with water while supplying the hot water while maintaining the temperature set by the user at the time of the operation of the bathtub filling function, the hot water in the bathtub filled with water depending on the installation conditions and environment of the bathtub, The temperature may be lower than the temperature desired by the user. In this case, there is a problem in that it is inconvenient for the user to additionally fill the bath with a high temperature water in order to adjust the water in the bath to an appropriate temperature.

Prior art relating to a hot water supply device having such a bath filling function is disclosed in Japanese Patent No. 10-1615408 and Japanese Patent Application No. 10-1482846.

SUMMARY OF THE INVENTION The present invention is conceived to solve the above-mentioned problems, and it is an object of the present invention to provide a hot water supply device having a bath filling function capable of supplying hot water to a bathtub so that the user can maintain the temperature of the hot water filled in the bathtub, The present invention has been made in view of the above problems.

In order to achieve the above-mentioned object, the hot water supply apparatus (100) having a bathtub filling function of the present invention comprises a water heater (100a) for heating hot water to supply hot water; A direct water pipe (10) for supplying direct water to the water heater (100a); A heat exchanger (20) for heating the direct water introduced through the direct water pipe (10); A hot water pipe (30) for supplying the hot water heated in the heat exchanger (20) to the bathtub (40); Applying a compensation temperature in consideration of the completion time of the bathtub filling until the hot water of the bathtub hot water temperature which is the target temperature of the hot water to be filled in the bathtub 40 and the hot water of the bath hot water flow rate which is the target flow rate in the bathtub 40 are filled, And a control unit (90) for controlling the supply of hot water to the bath (40) by setting the hot water supply hot water temperature supplied to the hot water supply unit (40) to a temperature higher than the bath hot water temperature by the compensation temperature.

A bathtub hot water flow rate setting unit 82 for setting the bath hot water flow rate, a bath hot water temperature setting unit 83 for setting the bath hot water temperature ).

Wherein the control unit (90) further comprises a flow rate sensor (60) for detecting a supply flow rate per unit time of the direct water flowing into the water heater (100a) The bath filling completion time can be calculated by the value divided by the supply flow rate per hour.

The control unit 90 sets the supplied hot water temperature by applying an initial compensation temperature considering the bath hot water temperature and the bath filling completion time at the beginning of the hot water supply, It can be set to the same temperature as the hot water temperature.

The control unit 90 can vary the compensation temperature from the initial compensation temperature to a gradually lower compensation temperature in proportion to the passage of time for supplying the hot water to the bath 40. [

The controller 90 may further include a flow control valve 70 for controlling the flow rate of the direct water flowing into the water heater 100a and the controller 90 controls the opening degree of the flow control valve 70 So that the hot water of the minimum flow rate can be controlled to be supplied to the hot water supply destination 50 other than the bath 40 and the bath 40.

The control unit 90 may control the flow regulating valve 70 to return to the fully opened state when no flow of direct water is detected in the flow sensor 60 after the completion of the filling of the bathtub.

The controller 90 may control the alarm generator 84 installed in the water heater 100a or the room controller to issue an alarm when the bathtub is filled.

A control method of a hot water supply apparatus having a bathtub filling function of the present invention comprises the steps of: a) setting a bathtub filling function; b) setting the hot water flow rate of the hot water to be filled in the bathtub and the hot water temperature of the bathtub; c) calculating a bath filling completion time until hot water of the bath hot water flow rate is filled in the bathtub; And d) applying a compensation temperature in consideration of the bath hot water temperature and the bath filling completion time to set the supply hot water temperature of the hot water supplied to the bath to a temperature higher than the bath hot water temperature by the compensation temperature to supply hot water to the bath .

The method according to any one of claims 1 to 3, wherein in the step c), a supply flow rate per unit time of the hot water supplied to the bathtub is detected by opening the water receptacle provided in the bathtub, and the bathtub filling completion time is a value obtained by dividing the bath hot water flow rate by the supply flow rate per unit time .

The supply flow rate per unit time of the hot water may be a value obtained by detecting the supply flow rate per unit time of the direct water flowing into the water heater when the hot water is used,

In the step d), an initial compensation temperature considering the bath hot water temperature and the bath filling completion time is applied to set the supply hot water temperature at the initial stage of hot water supply, and at the completion of filling the bathtub, The temperature can be set to the same temperature.

In the step d), the compensation temperature may be set to a value gradually changing from the initial compensation temperature to a lower compensation temperature in proportion to an elapse of time during which the hot water is supplied to the bathtub.

In the step d), the initial compensation temperature may be set in proportion to the bath filling completion time and the bath hot water temperature.

In the step d), the initial compensation temperature may be set in consideration of at least one of the outside air temperature, the direct water temperature, and the temperature around the bathtub.

When the bath filling completion time has elapsed, reducing the opening degree of the flow control valve for controlling the flow rate of the direct water flowing into the water heater, and controlling the minimum flow amount of hot water to be supplied to the hot water requiring place other than the bathtub and the bathtub .

Further comprising the step of returning the opening of the flow control valve to its original open state when it is determined that hot water is not used in the bathtub and the hot water destination, can do.

The determination of whether or not hot water is used in the bathtub and the hot water destination can be made based on a signal sensed by a flow sensor that detects the flow rate of direct water flowing into the hot water heater when hot water is used.

The method may further include issuing an alarm notifying completion of the tub filling when the bath filling completion time has elapsed.

In the step b), the setting of the bath hot water flow rate may be automatically set by selecting any one of a plurality of modes set according to the age of the user.

According to the hot water supply device having a bathtub filling function and the control method thereof, a compensation temperature considering the bath hot water temperature and the bath filling completion time set by the user is applied and the supplied hot water temperature of the hot water supplied to the bath is supplied to the bathtub By supplying the hot water to the bathtub by setting the temperature higher than the hot water temperature by the compensation temperature, the temperature of the hot water filled in the bathtub can be maintained at the temperature desired by the user at the completion of the bathtub filling.

In addition, by changing the compensation temperature from the initial compensation temperature to the gradually lower compensation temperature in proportion to the passage of time for supplying the hot water to the bathtub, it is possible to accurately maintain the temperature of the hot water filled in the bath at the completion of the bath filling .

In addition, when the completion time of the bath filling is elapsed, by controlling the opening of the flow control valve for controlling the flow rate of the direct water flowing into the water heater, the minimum flow amount of hot water is controlled to be supplied to the hot water source other than the bathtub and the bathtub, It is possible to maintain a state in which hot water can be used in a hot water place other than the bathtub.

1 is a schematic view showing a configuration of a conventional hot water supply device,
FIG. 2 is a schematic view showing the construction of a hot water supply apparatus having a bathtub filling function according to the present invention,
FIG. 3 is a control block diagram of a hot water supply apparatus having a bathtub filling function according to the present invention.
4 is a flowchart of a method of controlling a hot water supply apparatus having a bathtub filling function according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 and 3, a hot water supply apparatus 100 having a bathtub filling function according to the present invention includes a water heater 100a for heating hot water to supply hot water, a hot water supply unit for supplying hot water to the hot water heater 100a, A hot water pipe 30 for supplying the hot water heated in the heat exchanger 20 to the bath 40, a heat exchanger 20 for heating the hot water introduced through the hot water pipe 10, ) And a compensation temperature in consideration of the bath filling completion time until the hot water of the hot water flow rate of the bathtub hot water flow rate which is the target flow rate is filled in the bathtub 40 is applied to the bathtub hot water temperature which is the target temperature of the hot water to be filled in the bathtub 40 , And a control unit (90) for controlling the supply of hot water to the bath (40) by setting the supply hot water temperature of the hot water supplied to the bath (40) to a temperature higher than the bath hot water temperature by the compensation temperature .

The apparatus further includes a flow rate sensor 60 for detecting the flow rate of the direct water flowing into the water heater 100a and a flow rate control valve 70 for controlling the flow rate of the direct water flowing into the water heater 100a.

The hot water pipe 30 includes a first hot water pipe 31 connected to the water tank 41 side of the bathtub 40 and a hot water supply path 50, 51, 52, 53 connected to the kitchen, laundry room, And a second hot water pipe (32).

The flow sensor 60 senses the flow of the direct water flowing into the water heater 100a and detects the supply flow rate per unit time of the direct water. When the hot water is used, direct water as much as the supply amount of the hot water flows, so that the supply flow rate of the direct water passing through the direct water pipe (10) becomes equal to the supply flow rate of the hot water supplied through the hot water pipe (30). That is, the supply flow rate of hot water can be detected by detecting the supply flow rate of the direct water.

The flow control valve 70 controls the flow rate of the direct water flowing into the water heater 100a and adjusts the opening degree of the flow control valve 70 to supply the water to the hot water pipe 30 through the water straight pipe 10 And controls the flow rate of water.

3, a hot water supply apparatus 100 having a bathtub filling function according to the present invention includes a bathtub filling function setting unit 81, a bathtub hot water flow rate setting unit 82, a bathtub hot water temperature setting unit 83, And an alarm generating unit 84. [

The user sets the bathtub filling function through the bathtub filling function setting unit 81 and controls the bathtub hot water flow rate setting unit 82 and the bathtub hot water temperature setting unit 83 to change the target flow rate of the hot water to be filled in the desired bathtub And the bath hot water temperature which is the target temperature of the hot water to be filled in the bathtub can be set.

The alarm generating unit 84 is for informing that the hot water of the hot water flow rate of the bath set by the user is filled in the bath 40 and may be installed in the water heater 100a or in a room controller (not shown).

The information set by the bathtub filling function setting unit 81, the bathtub hot water flow rate setting unit 82 and the bath hot water temperature setting unit 83 and the information on the supply flow rate per unit time detected by the flow rate sensor 60 are input to the controller 90 . The controller 90 controls the operations of the flow control valve 70, the alarm generator 84, and the burner 21 based on the received information.

The control unit 90 calculates the bath filling completion time from the bath hot water flow rate and the supply flow rate per unit time of the hot water. The control unit 90 calculates the bathtub filling time based on the bath hot water temperature and the bath water filling temperature, So that the hot water is supplied.

The control unit 90 controls the amount of combustion of the burner 21 so that the hot water is supplied to the supply hot water temperature to which the compensation temperature is applied until the bath filling function is performed and the bath filling completion time is reached, An alarm notifying that the bath filling is completed is issued through the alarm generating unit 84 and the opening degree of the flow control valve 70 is reduced so that the minimum flow amount of hot water is supplied to the bath 40 50 as shown in FIG. Here, the 'minimum flow rate' is a predetermined flow rate for maintaining the set hot water temperature (when the predetermined flow rate is smaller than the minimum operation flow rate of the hot water supply device 100, the minimum operation flow rate) or the hot water supply device 100) can continuously supply the hot water.

Hereinafter, with reference to FIG. 4, a method for controlling a hot water supply apparatus having a bathtub filling function according to the present invention will be described.

First, the user sets the bathtub filling function through the bathtub filling function setting unit 81 (S1). Thereafter, the user sets the bath hot water flow rate, which is the target flow rate of the hot water to be filled in the bathtub 40, through the bathtub hot water flow rate setting section 82 (S2) And sets the bath hot water temperature which is the target temperature of the hot water to be filled (S3).

Next, when the user opens the water receiving unit 41 provided in the bathtub 40, the direct water flows into the water pipe 10, and the flow rate sensor 60 detects the supply flow rate per unit time of the direct water, The supply flow rate per hour is detected (S4, S5).

The control unit 90 controls the flow rate of the hot water to be supplied to the tub 40 based on the bath hot water flow rate set in step S2 and the supply flow rate per unit time of the hot water detected in step S5 Which is the time of the bathtub filling process (S6). In this step, the bath filling completion time can be calculated by dividing the bath hot water flow rate by the supply flow rate per unit time of the hot water.

For example, when the user sets the flow rate of the water to be filled in the bathtub 40, that is, the bath hot water flow rate is 150 liters (L), and the supply flow rate per unit time of the direct water detected by the flow rate sensor 60 is 10 Liter (L), the time required to fill the bath 40 with 150 liters (L) of hot water is calculated as 15 minutes.

In the next step, an initial compensation temperature considering the bath hot water temperature and the bath filling completion time is applied (S7), and the supply hot water temperature of the hot water supplied to the bath 40 is set to a temperature higher than the bath hot water temperature by the compensation temperature And supplies the hot water to the bath 40 (S8).

For example, when the bath hot water temperature set by the user is set to 45 deg. C, when water is supplied to the bathtub 40 while maintaining the temperature constant at 45 deg. C set by the user during the bath filling completion time, The temperature of the water filled in the bath 40 is gradually lowered due to the influence of the environment of the bath and the like. Therefore, the temperature of the water filled in the bath 40 after the completion of the bath filling operation is kept lower than 45 캜 set by the user. Factors influencing the lowering of the temperature of the water in the bath 40 after completion of the bath filling include the ambient temperature according to the temperature of the hot water, the outside air temperature, the environment of the bathroom, the insulation condition, etc., And the time required to complete the process. The outdoor air temperature may use Internet weather information received from a Wi-Fi room controller (not shown).

For this reason, in order to keep the temperature of the water in the bath 40 lower than the temperature desired by the user, and to keep the temperature of the water in the bath 40 at the time of completing the filling of the bath, The compensation temperature is applied to the temperature of the hot water supplied to the bath 40.

In the initial stage of the bathtub filling function operation, hot water is supplied at a temperature higher than the bathtub hot water temperature set by the user, and hot water at a temperature close to the bathtub hot water temperature is gradually supplied as the bathtub filling time elapses . That is, in the initial stage of hot water supply, an initial compensation temperature considering the bath hot water temperature and the bath filling completion time is applied to set the supply hot water temperature, and at the completion of filling the bathtub, the supply hot water temperature is set to the same temperature .

In the tub filling function operation, the supplied hot water temperature is related to the time when the tub filling function is operated and the bath hot water temperature set by the user. That is, the temperature difference between the bathtub hot water temperature set by the user and the water in the bathtub 40 increases as the time for filling the bathtub 40 becomes longer after the completion of the bathtub filling function, and becomes larger as the bathtub hot water temperature set by the user becomes higher . Therefore, the hot water supply device 100 must supply the high-temperature compensation temperature at an early stage as the time for filling the bath 40 with water becomes longer, and the higher the bath water temperature set by the user, The lowering of the temperature of the water can be minimized. Accordingly, the hot water supply device 100 changes and adjusts the supplied hot water temperature by setting and applying the initial compensation temperature in proportion to the bath hot water temperature and the bathtub filling completion time set by the user during the bathtub filling function operation.

For example, when the bath hot water temperature is set to 45 deg. C, the initial compensation temperature can be set as shown in Table 1 according to the bath filling completion time.

Bath temperature Bathtub filling time Initial compensation temperature Initial supply hot water temperature 45 ° C 5 minutes 1.5 ° C 46.5 DEG C 45 ° C 10 minutes 3 ° C 48 ° C 45 ° C 15 minutes 4.5 DEG C 49.5 DEG C 45 ° C 20 minutes 6 ℃ 51 ℃

The initial compensation temperature may be set in consideration of the bath water temperature set by the user and the bath filling completion time. The initial compensation temperature may be set by considering the atmospheric temperature, the direct water temperature, Can be set. In addition, the initial compensation temperature may be further adjusted depending on the user's environmental condition and taste.

The compensation temperature may be set to be gradually changed from the initial compensation temperature to a lower compensation temperature in proportion to an elapse of time during which hot water is supplied to the bath 40 (S9).

The controller 90 controls the alarm generating unit 84 to issue an alarm indicating that the filling of the bath has been completed (S11). At the same time, the control unit 90 controls the flow rate control valve 70 The opening degree is reduced so that the hot water having the minimum flow rate is supplied to the hot water supplying destination 50 other than the bathtub 40 and the bathtub 40 (S12).

When the bath filling completion time has elapsed in this way, the opening of the flow control valve 70 is reduced without completely closing the flow control valve 70, so that the hot water of the minimum flow rate is supplied to the bath 40 and the hot water other than the bath 40 It is possible to prevent waste of water and energy due to unnecessary supply of unnecessary hot water when the user does not lock the faucet 41 of the bath 40 at the completion time of the filling of the bathtub , The hot water supply destination (50) other than the bathtub (40) can maintain the state where hot water can be used.

The opening of the flow rate control valve 70 is reduced so that the user can lock the faucet 41 of the bath 40 while the hot water of the minimum flow rate is supplied and the hot water If no flow of direct water is detected in the flow sensor 60 by unused, the control unit 90 controls the flow control valve 70 to return to the fully opened state (S13, S14).

After the water receiver 41 of the bath 40 is locked, the opening of the flow control valve 70, whose opening has been narrowed, is controlled to be the original fully opened state, so that normal use of the hot water can be restored .

On the other hand, in step S2, the setting of the hot water flow rate of the bathtub can be automatically set by selecting any one of a plurality of modes set according to the age of the user.

For example, the plurality of modes may be classified into an adult mode, a child mode, and an infant mode so that the appropriate amount of hot water to be filled in the bathtub 40 may be automatically set according to the user's age.

As described above, the present invention is not limited to the above-described embodiments, and various changes and modifications may be made without departing from the scope of the present invention as defined in the appended claims. And such modifications are within the scope of the present invention.

1: hot water supply device 1a: water heater
2: direct water pipe 3: heat exchanger
4: Hot water pipe 5: Bathtub
100: hot water supply device 100a: water heater
10: direct water pipe 20: heat exchanger
21: burner 30: hot water pipe
31: first hot water pipe 32: second hot water pipe
40: bathtub 41: bathtub side faucet
50: Hot water source 51, 52, 53: Hot water required faucet
60: Flow sensor 70: Flow control valve
81: bathtub filling function setting section 82: bathtub water heating flow rate setting section
83: Bathtub hot water temperature setting unit 84: Alarm generating unit
90:

Claims (20)

A water heater 100a for heating the direct water to supply hot water;
A direct water pipe (10) for supplying direct water to the water heater (100a);
A heat exchanger (20) for heating the direct water introduced through the direct water pipe (10);
A hot water pipe (30) for supplying the hot water heated in the heat exchanger (20) to the bathtub (40);
Applying a compensation temperature in consideration of the completion time of the bathtub filling until the hot water of the bathtub hot water temperature which is the target temperature of the hot water to be filled in the bathtub 40 and the hot water of the bathtub hot water flow rate which is the target flow rate in the bathtub 40 are filled, A control unit (90) for controlling the supply of hot water to the bath (40) by setting the supply hot water temperature of the hot water supplied to the bathtub (40) to a temperature higher than the bath hot water temperature by the compensation temperature;
And a hot water supply unit having a bathtub filling function. The method according to claim 1,
A bathtub filling function setting unit 81 for setting a bathtub filling function;
A bath hot water flow rate setting unit 82 for setting the bath hot water flow rate;
A bath hot water temperature setting unit 83 for setting the bath hot water temperature;
Wherein the hot water supply unit is provided with a bathtub filling function. The method according to claim 1,
Further comprising a flow rate sensor (60) for detecting a supply flow rate per unit time of the direct water flowing into the water heater (100a)
Wherein the control unit (90) calculates the bath filling completion time by a value obtained by dividing the bath hot water flow rate by the supply flow rate per unit time of the direct water detected by the flow rate sensor (60) Device. The method according to claim 1,
The control unit 90 sets the supplied hot water temperature by applying an initial compensation temperature considering the bath hot water temperature and the bath filling completion time at the beginning of the hot water supply, Wherein the hot water supply unit is set at a temperature equal to the hot water temperature. 5. The method of claim 4,
Wherein the control unit (90) varies the compensation temperature from the initial compensation temperature to a gradually lower compensation temperature in proportion to an elapse of time for supplying hot water to the bath (40). Hot water supply. The method according to claim 1,
Further comprising a flow control valve (70) for controlling the flow rate of direct water flowing into the water heater (100a)
The control unit 90 reduces the opening degree of the flow control valve 70 so that the minimum flow rate of hot water flows between the bath 40 and the hot water supplying destination 50 other than the bath 40, The hot water supply device having a bathtub filling function. The method according to claim 6,
Wherein the control unit (90) controls the flow regulating valve (70) to return to the fully opened state when no flow of direct water is sensed in the flow sensor (60) after completing the filling of the bathtub A hot water supply device. The method according to claim 1,
Wherein the controller (90) controls the alarm generator (84) installed in the water heater (100a) or the room controller to issue an alarm when the bathtub is filled. a) establishing a tub filling function;
b) setting the hot water flow rate of the hot water to be filled in the bathtub and the hot water temperature of the bathtub;
c) calculating a bath filling completion time until hot water of the bath hot water flow rate is filled in the bathtub; And
d) supplying the hot water to the bath by setting the temperature of the supply hot water supplied to the bath by applying the compensation temperature considering the hot water temperature of the bathtub and the completion time of filling the bathtub to a temperature higher than the bath hot water temperature by the compensation temperature step;
Wherein the hot water supply device has a bathtub filling function. 10. The method of claim 9,
The method according to any one of claims 1 to 3, wherein in the step c), a supply flow rate per unit time of the hot water supplied to the bathtub is detected by opening the water receptacle provided in the bathtub, and the bathtub filling completion time is a value obtained by dividing the bath hot water flow rate by the supply flow rate per unit time Wherein the hot water supply device has a bathtub filling function. 11. The method of claim 10,
Wherein the supply flow rate per unit time of the hot water is a value obtained by detecting a supply flow rate per unit time of the direct water flowing into the hot water heater when the hot water is used is detected by a flow rate sensor. 10. The method of claim 9,
In the step d), an initial compensation temperature considering the bath hot water temperature and the bath filling completion time is applied to set the supply hot water temperature at the initial stage of hot water supply, and at the completion of filling the bathtub, And the temperature of the hot water supply device is set to the same temperature as the hot water supply device. 13. The method of claim 12,
Wherein the compensation temperature is set to be gradually changed from the initial compensation temperature to a lower compensation temperature in proportion to an elapsed time of supplying the hot water to the bathtub in the step d) / RTI > The method according to claim 12 or 13,
Wherein in the step d), the initial compensation temperature is set in proportion to the bath filling completion time and the bath hot water temperature. The method according to claim 12 or 13,
Wherein the initial compensation temperature is set in consideration of at least one of an outside temperature, a direct water temperature, and a temperature around the bathtub in the step d). 10. The method of claim 9,
Further comprising the step of reducing the opening degree of the flow rate control valve for controlling the flow rate of the direct water flowing into the water heater when the bath filling completion time has elapsed so as to control the minimum flow amount of hot water to be supplied to the hot water requiring place other than the bathtub and the bathtub A method of controlling a hot water supply device having a bath filling function. 17. The method of claim 16,
Further comprising the step of returning the opening of the flow control valve to its original open state when it is determined that hot water is not used in the bathtub and the hot water destination, Wherein the hot water supply device has a bathtub filling function. 18. The method of claim 17,
Wherein the determination of whether the hot water is used in the bathtub and the hot water destination is based on a signal sensed by a flow rate sensor that detects the flow rate of the direct water flowing into the hot water heater when hot water is used, Control method for hot water supply. 10. The method of claim 9,
Further comprising the step of issuing an alarm notifying completion of the tub filling when the bath filling completion time has elapsed. 10. The method of claim 9,
Wherein the setting of the bath hot water flow rate is automatically set by selecting one of a plurality of modes set according to the age of the user in the step b) .

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