JP2001141299A - Bath hot-water supplying system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To contrive the grade up of a bath hot-water supplying system while contriving the reduction of a cost without changing an already installed bath hot-water supplying system as much as possible. SOLUTION: A bath hot-water supplying system is provided with a bathtub temperature detecting means 6, detecting the temperature of hot-water in a bathtub 16 by contacting with the hot-water in the bathtub 16, a water level detecting means 13, detecting the level of hot-water in the bathtub 16, and a draining means 15, draining the hot-water in the bathtub 16. The bath hot-water supplying system is constituted so as to carry out hot-water filling operation, in which the supply of hot-water is commanded to a heat source control means 47 so that hot-water of a set temperature is poured into the bathtub 16 to a set level of water based on the detecting information of the water level detecting means 13 and the bathtub temperature detecting means 6, and optimum temperature/optimum amount keeping operation, in which hot-water supplying is commanded to a control means 47 for a heat source so as to maintain the reserving condition of the hot-water of a set temperature at a set water level in the bathtub 16 and draining operation of the draining means 15 is controlled.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot water supply section for supplying hot water to a bathtub through a hot water supply path, and a control means for a heat source for controlling a hot water supply operation of the hot water supply section so as to supply hot water at a required temperature. The present invention relates to a bath hot water supply system provided with a heat source unit for bath hot water supply provided.

[0002]

2. Description of the Related Art In a bath water supply system as described above, as shown in FIG. 6, a bath water supply heat source unit 2 comprises a heat supply unit K and a heat source as a heat source control means for controlling the hot water supply operation of the water supply unit K. The heat source control unit 47 is configured to include a hot water supply at a hot water setting temperature based on a hot water operation command from the remote control 5, On the basis of the reheating operation command, the reheating operation in which hot water of the reheating setting temperature (for example, 90 ° C.) is supplied to the reheating unit in a set amount, and the hot water setting temperature based on the replenishing hot water operation command from the remote controller 5 are set. The hot water supply operation of the hot water supply unit K is controlled so as to perform each of the hot water operations of adding the hot water of the corresponding hot water setting temperature (for example, the hot water setting temperature or the hot water setting temperature + 1 ° C.) and supplying the hot water set amount. Composed Those who are have been known. The hot water supply heat source unit 2 supplies hot water to the bath tub 16 through the hot water supply path 1 in any of the above-mentioned hot water supply hot water supply operation, additional heating hot water supply operation, and added hot water supply water supply operation.

[0003]

However, in the bath hot water supply system shown in FIG. 6, all of the hot water supply operation, the additional heating hot water supply operation, and the additional hot water supply operation are performed through the hot water supply passage 1 through the bath tub 16. In order to supply hot water to the bath, it is possible to maintain the hot water in the bathtub at a set temperature by executing one of a hot water supply operation, a supplementary hot water supply operation, and a supplementary hot water supply operation. When the water level of the hot water rises, for example, when the temperature of the hot water in the bathtub is decreasing to a low temperature, the water level in the bathtub is maintained at the set water level, for example, the hot water in the bathtub overflows. Is not possible. That is, in the bath water heater shown in FIG. 6, it is not possible to execute the appropriate temperature and appropriate amount keeping to maintain the state of storing the hot and cold water at the set temperature in the bathtub at the set water level.

[0004] Generally, as a bath water supply system capable of executing the above-mentioned proper temperature and proper amount keeping, as shown in FIG. 7, water in the bath tub 16 is circulated over the bath water supply heat source unit 2 and the bath tub 16. A circulation path 50 is provided;
A hot water supply unit K including a water heating heat exchanger for heating hot water in the bathtub 16 circulating through the circulation path 50 and a burner for heating the heat exchanger, and a heat source for controlling the hot water supply operation of the hot water supply unit K A heat source control unit 47 as a control means is provided in the hot water supply heat source unit 2, and a circulation pump and a circulation path 50 for circulating hot water in the bathtub 16 through the circulation path 50.
A bathtub temperature detecting means for detecting the temperature of the hot water in the bathtub by contacting the hot water in the bathtub, and a water level detecting means installed at an intermediate position of the circulation path 50 and detecting the level of the hot water in the bathtub 16 are also provided. A hot water supply unit K is known (for example, Japanese Patent Application Laid-Open No. H10-281550). FIG.
1 is a schematic configuration diagram of a bath hot water supply system in which a detailed configuration of a hot water supply unit K including a heat exchanger, a circulation pump, a bathtub temperature detection unit, a water level detection unit, and the like is omitted in the bath hot water supply system described in the above publication. ing. In addition, the heat source control unit 47 described in the above publication (Japanese Patent Laid-Open No. Hei 10-281550) operates the circulation pump based on the appropriate temperature and proper amount keeping operation command from the remote controller 5 to operate the bathtub temperature detecting means. Based on the detection information, the hot and cold water in bathtub 16 is
While being circulated through, the water is heated to the set temperature by the heat exchanger (dotted line in FIG. 7), and hot water of the set temperature is supplied to the set water level based on the detection information of the water level detecting means (see FIG. (Arrow 7 in solid line) The hot water supply unit K is configured to control the hot water supply operation in order to execute the proper temperature and proper amount keeping operation.

[0005] Therefore, in order to upgrade the bath hot water supply system by adding a function of executing the above-described proper temperature and proper amount keeping operation, the bath hot water supply system shown in FIG. 6 is disclosed in the above-mentioned publication (Japanese Unexamined Patent Publication No. 10-281550). It is possible to change to the bath hot water supply system described. However, in this case, it is necessary to perform a pipe replacement work such as providing a circulation path between the bathtub and the bath water heater, but for example, in an apartment house, a pipe connecting the bathtub and the bath water heater is required. Since it is provided in the concrete slab, it is impossible to actually perform the work of replacing pipes, and it is impossible to upgrade the bath hot water supply system. Also,
Even if the pipe replacement work can be performed, FIG.
6 cannot be used as it is because, for example, the heat source unit for bath water supply shown in FIG. 6 does not include a circulation pump and the like, it is necessary to replace the heat source unit for bath water supply with heat. This leads to increased costs.

[0008] As shown in FIG. 8, as a bath water supply system capable of executing the above-mentioned proper temperature and proper amount keeping, the hot and cold water in a circulation path 48 which is communicated with the bath tub 16 and circulates the hot water in the bath tub 16 is provided. A bathtub temperature detecting means 6 for detecting the temperature of the hot water in the bathtub 16 by a contact action; a circulation pump 49 for circulating the hot water in the bathtub 16 through the circulation path 48;
A unit Y provided at an intermediate position of the circulation path 48 and provided with a water level detecting means 13 for detecting the level of hot water in the bathtub 16 and a drainage means 15 for draining hot water in the bathtub 16 is provided. Hot water supply unit K including a heat exchanger and a burner, and heat source control unit 47 as heat source control means
The hot water supply heat source unit 2 provided with the water supply unit is provided, and the heat source control unit 47 is configured to control the operation of the unit Y and the hot water supply operation of the hot water supply unit K such as the drainage operation of the drainage unit 15. (For example, see Japanese Patent Application Laid-Open No. 3-76938).
issue). In FIG. 8, a filter, a sterilizing tank, and the like are used when purifying hot water in the bathtub 16, and when draining hot water in the bathtub 16, the filter is washed and drained (dotted line in FIG. 8). FIG. 8 shows that
In the bath hot water supply system described in the above publication, the hot water supply unit K
FIG. 1 is a schematic configuration diagram of a bath hot water supply system in which a detailed configuration of FIG. To add an explanation, the heat source control unit 47
When an appropriate temperature and appropriate amount keep operation command of the remote controller 5 is issued,
The circulating pump 49 is operated, and drainage of the drainage unit 15 is performed based on the detection information of the water level detection unit 13 and the bathtub temperature detection unit 6 so as to maintain the state of storing the hot water at the set temperature in the bathtub 16 at the set water level. In addition to controlling the operation, a suitable temperature and appropriate amount keeping operation for controlling the hot water supply operation of the hot water supply unit K so as to supply hot water (for example, hot water setting temperature or 93 ° C.) is performed.

[0007] In order to upgrade the bath hot water supply system by adding a function of executing the above-mentioned proper temperature and proper amount keeping operation, the bath hot water supply system shown in FIG. It is possible to change to the bath hot water supply system described. However, the heat source control unit shown in FIG. 6 controls only the hot water supply operation of the hot water supply unit K, whereas the heat source control unit shown in FIG. And to control the hot water supply operation of the hot water supply unit K,
The heat source unit for bath water supply shown in FIG. 6 cannot be used as it is. Therefore, the bath hot water supply system shown in FIG.
With the upgrade to the bath hot water supply system described in (1), it is necessary to replace the heat source unit for bath hot water supply, which leads to an increase in cost.

The present invention has been made in view of the above point, and an object of the present invention is to provide a bath tub without changing the existing bath hot water supply system as much as possible and reducing costs in upgrading the bath hot water supply system. Another object of the present invention is to provide a bath hot water supply system capable of adding a function of keeping an appropriate temperature and an appropriate amount for maintaining a state in which hot and cold water at a set temperature is stored at a set water level.

[0009]

According to the first aspect of the present invention, there is provided a hot water supply unit for supplying hot water to a bathtub through a hot water supply path, and supplying hot water at a required temperature. A hot water supply system provided with a heat source control device for controlling the hot water supply of the hot water supply unit so as to perform hot water supply in the bath tub, A bath tub temperature detecting means for detecting the temperature of the hot water in the bath tub by contacting the hot water in the circulating passage circulating the hot water in the bath tub and communicating with the hot tub in the bath tub; A water level detection unit that is installed at an intermediate position and detects a water level of the hot water in the bathtub, a drainage unit that drains the hot water in the bathtub, and a hot water supply control unit are provided, and the hot water supply control unit is provided with: , The water level detection A bathing operation for instructing the heat source control means to supply hot water so as to fill hot water at a set temperature in the bathtub at a set water level based on detection information of a step and the bathtub temperature detecting means; and In order to maintain a state of storing hot and cold water at a set temperature at a set water level, the heat source control means is instructed to supply hot water and an appropriate temperature keeping operation for controlling a drain operation of the drain means is executed. ing.

That is, the hot water supply control means is provided separately from the heat source control means provided in the bath hot water supply heat source unit. This hot water supply control means instructs the heat source control means to supply hot water for the hot water filling operation and the appropriate temperature appropriate amount keep operation, and also provides the heat source control means for the appropriate temperature appropriate amount keep operation. In addition to instructing hot water supply, the drainage operation of the drainage means is controlled as needed. Of course, the hot water supply control means executes the hot water filling operation and the appropriate temperature appropriate amount keeping operation based on the detection information of the bathtub temperature detecting means and the water level detecting means (for example, constituted by a pressure sensor).

In addition, the hot water supply control means instructs, for example, the heat source control means to supply hot water at a set temperature for hot water filling during the hot water filling operation. It will be filled with water. When the temperature of the hot water is lower than the set temperature during the operation of keeping the appropriate temperature at the appropriate temperature, for example, by instructing the heat source control means to supply hot water sufficiently higher than the set temperature and supplying the hot water, the temperature of the hot water is set to the set temperature. At this time, the level of hot water is adjusted to the set level by the drainage operation of the drainage means. When the temperature of the hot water is the set temperature but the water level is low, the hot water level is adjusted to the set water level, for example, by instructing the heat source control means to supply hot water at a temperature corresponding to the set temperature. become.

In short, the hot water supply control means for instructing the heat source control means to supply hot water is provided separately from the heat source control means, and is required to be linked with the hot water supply control means. Is provided with a bathtub temperature detecting means, a water level detecting means, and a draining means, which do not need to be linked to each other, so that the existing hot water supply heat source device and the existing hot water supply path can be effectively used to perform the filling operation and the appropriate temperature. When the bath water supply system shown in FIG. 6 is upgraded to a bath water supply system having a function capable of keeping a proper amount of the appropriate amount of heat, the existing bath can be upgraded. While using the hot water supply heat source and the existing hot water supply path as they are, hot water supply control means, bathtub temperature detection means, water level detection means, and
By adding the drainage means, the upgrade can be performed as desired, so that the existing bath water supply system can be upgraded as much as possible and the cost can be reduced while reducing the cost of the bath water supply system. We have provided a bath water supply system that is effective for improving the bath.

According to the second aspect of the present invention, the heat source control means includes: a hot water supply operation for supplying hot water at a hot water set temperature in accordance with the hot water setting command; When the additional heating command is issued, the additional heating water supply operation is performed to supply the hot water at the additional heating set temperature, and the additional water corresponding to the hot water setting temperature is issued as the additional hot water command is issued. The hot water supply control means is configured to perform a hot water supply operation for adding hot water at a hot water set temperature and supplying a set amount of hot water, and the hot water supply control means includes:
Command the hot water filling command to the heat source control means, and,
In the appropriate temperature and proper amount keeping operation, the heat source control means is configured to instruct the additional heating command and the additional hot water command.

That is, the heat source equipment for bath water supply usually has a function of hot water supply operation, additional hot water supply operation, and additional hot water supply operation. It is possible to execute the optimal temperature and appropriate amount keeping operation while repeatedly performing the hot water supply operation and the hot water supply operation, and while effectively utilizing the functions provided by the bath water heater, the hot water supply operation and the optimal temperature and appropriate amount keeping are performed. The operation can be performed.

Further, for example, the hot water supply control means instructs the heat source control means to supply hot water at a set temperature for filling, and instructs the heat source control means to interrupt the hot water supply, while detecting the water level. Water filling to a set water level based on the detection information of the means, or an integrated amount detecting means such as a water amount sensor for detecting an integrated amount of hot water supply in a hot water supply path is provided. It is conceivable to execute a hot water filling operation and a proper temperature appropriate amount keeping operation by instructing the heat source control means to supply hot water at the set temperature to the heat source and filling the water to the set water level based on the detection information of the integrated amount detecting means.

However, in the case where the hot water is intermittently supplied to the set water level based on the detection information of the water level detecting means, it takes a long time to fill the hot water or the control of the hot water supply control means. It gets complicated. Further, in the case where the integrated amount detecting means is provided in the hot water supply path and the hot water is filled to the set water level based on the detection information of the integrated amount detecting means, the cost is increased by the provision of the integrated amount detecting means. Become. On the other hand, as described above, the hot water supply control means instructs the hot water supply command, the additional heating command, and the additional hot water command to the heat source control means, thereby effectively using the function provided in the bath hot water supply heat source device. The hot water filling operation and the appropriate temperature and appropriate amount of keep operation will be performed while utilizing it, so that the control of the hot water supply control means will be complicated and the bath hot water supply system will be upgraded while preventing disadvantages such as cost increase. Therefore, it is possible to advantageously upgrade the bath hot water supply system.

According to the third aspect of the present invention, there is provided a bath control unit including the drainage unit, the water level detection unit, and the hot water supply control unit. That is,
Just installing the bath control unit including the drainage means, the water level detection means, and the hot water supply control means,
It is possible to add a function of maintaining the state of storing hot and cold water at the set temperature in the bathtub at the set water level, and it is possible to easily perform the installation work with the addition of the function. In particular, in a unit bath or the like, a bath control unit may be installed in the space between the bathtub and the side wall of the unit bath, and each of the drainage unit, the water level detection unit, and the hot water supply control unit may be installed. There is no need to secure a space, which is preferable in terms of installation space.

According to a fourth aspect of the present invention, a hot water supply remote controller for instructing the hot water supply control means to issue a control command is provided, and the hot water supply control means is connected to the hot water supply remote control via the hot water supply remote control. It is configured to instruct the control means to supply hot water. In other words, the remote controller for hot water supply and the control means for hot water supply are connected so as to be able to transmit and receive control commands freely, and the remote controller for hot water supply and the control means for heat source are connected so as to be able to transmit control commands freely. Since the tensioning operation and the appropriate temperature keeping operation can be performed, the hot water supply control means is compared with a configuration in which the hot water supply is directly instructed to the heat source control means. The connection work with the heat source control means is not required, and the installation work of the hot water supply control means and the like can be more easily performed.

According to the fifth aspect of the present invention, the hot water supply control means is configured to maintain the state of storing hot and cold water at a set temperature in the bathtub at a set water level in the appropriate temperature and proper amount keeping operation. Based on the detection information of the water level detecting means and the bathtub temperature detecting means, and the hot water supply temperature of the hot water supplied from the bath hot water supply heat source unit, the amount of wastewater to be drained from the bathtub is determined in advance, and the control for the heat source is performed. The drainage operation of the drainage unit is controlled so as to drain the drainage amount before instructing the unit to supply hot water. That is, in the appropriate temperature and appropriate amount keeping operation, in the case of controlling the drainage operation of the drainage means after instructing the heat source control means to supply hot water, for example, although the hot water of the set water level is stored in the bathtub, Is below the set temperature,
High-temperature hot water is supplied from the hot water supply unit, and the hot water in the bath tub at the set temperature will be drained, and the amount of heat of the high-temperature hot water supplied from the hot water supply unit will be wasted. become. However, since the amount of drainage to be drained from the bathtub is determined in advance, and the drainage unit is operated before the heat source control unit is instructed to supply hot water so as to drain the drainage amount, high-temperature hot water is supplied. Hot water in the bathtub before draining. Therefore, compared to the above-described heat source control means for instructing the supply of hot water and then controlling the drainage operation of the drainage means, the amount of hot water supplied from the bath water supply heat source unit is effectively utilized, and the optimal temperature and the appropriate amount are provided. It is possible to execute the keep operation.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A bath hot water supply system according to the present invention will be described with reference to the drawings. [First Embodiment] As shown in FIGS. 1 and 2, this bath hot water supply system supplies hot water through a hot water supply path 1 to a bathtub 1.
A bath as a heat source unit for bath water supply, comprising a hot water supply unit K for supplying hot water to the hot water supply unit 6 and a heat source control unit 47 as a heat source control unit for controlling hot water supply operation of the hot water supply unit K so as to supply hot water at a required temperature. Hot water supply device 2 and hot water supply control unit 3 as a hot water supply control unit that instructs a heat source control unit 47 to supply hot water and controls a drainage operation of a drainage unit that drains hot water in bathtub 16.
And a hot water supply remote control 5 that instructs the hot water supply control unit 3 to issue a control command.
Further, a bath tub temperature thermistor 6 as a bath tub temperature detecting means for detecting the temperature of the hot water in the bath tub 16 by making contact with the hot water in the bath tub 16 is built in the bath adapter 7.

The remote controller 5 for hot water supply has an operation switch 8 for instructing start and stop of hot water supply, a hot water switch 9 for instructing hot water operation, an appropriate temperature and suitable amount keep switch 10 for instructing proper temperature and appropriate amount of keep operation, and a bathtub 16. A temperature setting switch 11 for setting a required hot water temperature such as a set hot water temperature or a general hot water supply temperature, a water level setting switch 12 for setting a set water level of hot water in the bathtub 16 and the like are provided. In this embodiment, one remote control 5 for hot water supply is provided. However, for example, a plurality of remote controls for hot water supply, such as two or more, may be provided and installed in a kitchen or a bathroom as appropriate.

The bath control unit 4 is provided at an intermediate position of the hot water supply path 1 and is a water level sensor 13 (for example, a pressure type water level sensor) as a water level detecting means for detecting the level of hot water in the bathtub 16. And a solenoid valve 15 for drainage, which is a drainage means that can be drained freely through a drainage path 14 branched from the hot water supply path 1, and the hot water in the bathtub 16 is supplied to the bottom of the bathtub 16 through the drainage path 14. The water is drained to the disposed drain pan 17. Then, the hot water supply control unit 3 controls the heat source of the bath water heater 2 so that hot water of a set temperature is filled in the bath tub 16 at the set water level based on the detection information of the water level sensor 13 and the bath tub temperature thermistor 6. A hot water supply operation is instructed to the control unit 47 and a hot water supply is instructed to the heat source control unit 47 of the bath water heater 2 so as to maintain a state of storing hot water at a set temperature in the bathtub 16 at a set water level. In addition, it is configured to execute an appropriate temperature and appropriate amount keeping operation for controlling the opening and closing operation of the drainage electromagnetic valve 15.

The hot water supply control unit 3 sends the hot water supply command to the heat source control unit 47 via the hot water supply remote control 5 in the hot water supply operation in which the hot water supply operation command is issued by the hot water supply remote control 5. In the proper temperature and proper amount keeping operation in which a command and an appropriate temperature and proper amount keeping operation command are issued by the hot water supply remote controller 5, the heat source controller 47 is instructed via the hot water supply remote controller 5 with the additional heating command and the additional hot water command. It is configured as follows. And the control part 47 for heat sources
A hot water supply operation that supplies hot water at the hot water setting temperature in accordance with the hot water setting command, and a hot water setting operation at the hot water setting temperature when the hot water heating command is issued. A supplementary hot water supply operation for supplying hot water and an additional hot water supply operation for supplying hot water at a set hot water set temperature corresponding to the hot water set temperature and a hot water set amount of hot water in response to the addition of the hot water command are executed. It is configured as follows.

More specifically, the hot water supply remote controller 5 has a unit control command unit for instructing the hot water supply control unit 3 with control information such as an operation switch 8, a hot water filling switch 9, and an appropriate temperature and appropriate amount keep switch 10. 18 and a relay unit 19 for relaying control commands such as a hot water filling command, a reheating command, and a hot water command from the hot water supply control unit 3. Then, the hot water supply remote control 5 and the hot water supply control unit 3 are controlled by the hot water supply remote control 5 so that the hot water filling operation command and the appropriate temperature and appropriate amount keeping operation command are issued to the hot water supply control unit 3.
Are connected wirelessly or by wire, and the hot water supply command, the additional heating command, and the hot water command from the hot water supply control unit 3 are instructed to the heat source control unit 47 via the hot water supply remote control 5. And a hot water supply remote control 5 and a heat source control unit 4
7 are connected wirelessly or by wire.

As shown in FIG. 2, the bath water heater 2 has a fin tube type heat exchanger 23 for heating the water supplied from the water supply channel 21 and supplying the water to the hot water channel 22.
And a gas burner 24 for heating the heat exchanger 23
The water supply passage 21 includes a water supply amount sensor 25 for detecting a water supply amount and a water supply temperature thermistor 26 for detecting a water supply temperature.
A hot water temperature thermistor 27 for detecting hot water temperature is provided.

The hot water supply path 22 includes a general hot water supply side branch hot water supply path 22a to which a general hot water supply path 29 provided with a general hot water tap 28 such as a currant or a shower is connected, and a hot water supply path after heating by the heat exchanger 23. Bath side branch hot water supply path 22 to which hot water supply path 1 for supplying hot water to bath tub 16 is connected in communication.
b. A check valve 30, an electromagnetic water proportional valve 31, and a mixing thermistor 32 are provided in the hot water supply passage 22 from the upstream side, and an electromagnetic hot water filling valve 33 and a vacuum breaker are provided in the bath side branch hot water supply passage 22b. An interrupt sensor 35 is provided in the general hot water supply side branch hot water supply passage 22a.

In the hot water supply passage 22, a bypass passage 36 connected to the water supply passage 21 is connected to a portion between the check valve 30 and the water proportional valve 31, and an electromagnetic mixing valve is connected to the connection portion. 37 are provided. Further, a reheating path 38 is provided which connects the hot water supply path 22 upstream of the check valve 30 and the bath side branch hot water supply path 22b downstream of the hot water filling valve 33 and upstream of the vacuum breaker 34. An electromagnetic reheating valve 39 is provided in the reheating path 38 so that hot water having a set temperature for reheating can be supplied through the reheating path 38.

A fuel gas supply passage 40 for supplying a fuel gas is connected to the gas burner 24. The fuel gas supply passage 40 is provided with an electromagnetic interrupting valve 41 for interrupting the supply of the fuel gas and a governor. Are provided with an igniter 44 for igniting the gas burner 24, a frame rod 45 for confirming ignition, and primary and secondary air for combustion on the gas burner 24. A fan 46 for supplying the secondary air and supplying the cooling air is also provided.

The bath water heater 2 is configured such that the heat source controller 47 controls the hot water supply operation of the water heater K, and the heat source controller 47 includes the remote controller 5 for hot water supply.
In accordance with a control command from the controller, the respective operations of a general hot water supply operation, a hot water supply water supply operation, a supplementary hot water supply operation, and a hot water supply water supply operation are executed.

The operation of the heat source controller 47 will be further described. The operation switch 8 of the remote controller 5 for hot water supply is turned on.
In the operation state, the general hot water supply mode is set, and when the water flow detected by the water flow sensor 25 becomes greater than or equal to the set water amount as the hot water tap 28 is opened, the general hot water supply operation is performed. That is, the fan 46 is driven to rotate, the safety valve 43 is opened, the intermittent valve 41 is opened, and the electromagnetic proportional valve 42 is set to the mild ignition position.
And ignition is confirmed by the flame rod 45. At this time, the required gas amount is calculated from the temperature set by the temperature setting switch 11 of the hot water supply remote controller 5 based on the water amount detected by the water flow rate sensor 25 and the water temperature detected by the incoming water temperature thermistor 26, and the electromagnetic proportional valve 42 is opened. While adjusting the degree, the opening degree of the mixing valve 37 and the rotation speed of the fan 46 are also adjusted.

Thus, the water from the water supply channel 21 is
A part thereof is heated by the heat exchanger 23, mixed with water from the bypass passage 36, and discharged from the hot-water tap 28. Further, the electromagnetic type is adjusted so that the temperature detected by the mixing thermistor 32 becomes the set temperature. Fine adjustment of the opening of the proportional valve 42 and the opening of the mixing valve 37 is performed.
If the temperature detected by the mixing thermistor 32 is less than the set temperature even if the maximum temperature is burned, the water proportional valve 31 is throttled to control the temperature to the set temperature.

When a hot water supply command is issued by the hot water supply control unit 3 via the hot water supply remote controller 5, the hot water supply mode is set, the hot water filling valve 33 is opened, and the same operation as in the above general hot water supply mode is performed. Then, based on the water flow detected by the water flow rate sensor 25 and the water temperature detected by the incoming water temperature thermistor 26, the required gas amount is calculated from the hot water setting temperature by the temperature setting switch 11 of the remote controller 5 for hot water supply. The opening and the like are adjusted, and the opening and the like of the electromagnetic proportional valve 42 are finely adjusted so that the temperature detected by the mixing thermistor 32 becomes the set temperature. When the hot water supply control unit 3 issues a hot water filling stop command via the hot water supply remote controller 5, the safety valve 43, the intermittent valve 4
1, and the electromagnetic proportional valve 42 is closed, the combustion of the gas burner 24 is stopped, the hot water supply to the bathtub 16 is stopped, and the hot water supply operation ends. In addition,
When the hot-water tap 28 is opened during the hot water filling mode,
The hot water filling valve 33 is closed based on the detection of the interrupt sensor 35, the above-mentioned general hot water supply is executed, and the hot water filling is resumed after the general hot water supply ends.

When the additional heating command is issued by the hot water supply controller 3 via the hot water remote controller 5, the additional heating mode is set, the additional heating valve 39 is opened, and the temperature detected by the hot water supply temperature thermistor 27 is increased. The required gas amount is calculated based on the water amount detected by the water flow rate sensor 25 and the water temperature detected by the incoming water temperature thermistor 26 so that the boiler set temperature (for example, about 90 ° C.) is reached, and the opening of the electromagnetic proportional valve 42 is adjusted. And fan 4
6 is also adjusted, and the opening of the electromagnetic proportional valve 42 is finely adjusted based on the temperature detected by the hot water supply temperature thermistor 27. Then, when hot water of the set temperature for additional heating is supplied through the additional heating path 38 and the supply path 1 for hot water supply, the additional heating hot water supply operation is terminated. When the hot water tap 28 is opened during the additional heating mode, the additional heating valve 39 is closed based on the detection of the interrupt sensor 35,
The above-described general hot water supply is performed, and additional heating is restarted after the general hot water supply ends.

When a hot water command is instructed by the hot water supply control unit 3 via the hot water supply remote controller 5, the hot water mode is set, the hot water filling valve 33 is opened, and the amount of water detected by the Based on the water temperature detected by the water temperature thermistor 26, the required gas amount is calculated from the hot water setting temperature (hot water setting temperature or hot water setting temperature + 1 ° C) by the temperature setting switch 11 of the remote control 5 for hot water supply, and an electromagnetic proportional valve 42
Of the electromagnetic proportional valve 42 is fine-tuned so that the temperature detected by the mixing thermistor 32 becomes the hot water set temperature (the hot water set temperature or the hot water set temperature + 1 ° C). . Then, when hot water having a set hot water set temperature (hot water set temperature or hot water set temperature + 1 ° C.) is supplied through the hot water supply path 1 and the set hot water is supplied, the hot water hot water supply operation is terminated. When the hot water tap 28 is opened during the hot water mode, the hot water filling valve 33 is closed based on the detection of the interrupt sensor 35, and the above-described general hot water supply is executed. Hot water is resumed.

A description will be given of the hot water filling operation and the appropriate temperature and appropriate amount keeping operation in the hot water supply control unit 3. When the hot water supply switch 9 of the remote control 5 for hot water supply is
When the N operation is performed, a hot water supply command is issued to the heat source control unit 47 via the hot water supply remote controller 5 to execute the hot water supply operation. 47 performs the hot water supply operation described above. And
When the set temperature hot water is filled in the bathtub 16 based on the detection information of the water level sensor 13 and the bathtub temperature thermistor 6, the hot water supply control unit 3 sends the control signal to the heat source control unit 47 via the hot water supply remote control 5. A hot water filling stop command is instructed, and the heat filling control unit 47
After the above-mentioned hot water supply operation ends, the appropriate temperature and proper amount keeping operation described below is automatically executed until the hot water setting time elapses thereafter.

When the appropriate-temperature-appropriate-quantity keep switch 10 of the hot-water supply remote controller 5 is turned ON, the water-supply control unit 3 executes the water level sensor 13 to execute the appropriate-temperature appropriate-quantity keep operation.
And, based on the detection information of the bathtub temperature thermistor 6, it is determined whether the hot water in the bathtub 16 is lower than the set temperature and whether the hot water in the bathtub 16 is lower than the set water level,
On the basis of this discrimination information, a reheating command and a hot water command are issued to the heat source control unit 47, and the opening / closing of the drainage electromagnetic valve 15 is controlled. That is,
As shown in the table of FIG. 3, based on the detection information of the water level sensor 13 and the bathtub temperature thermistor 6, whether the water in the bathtub 16 is lower than the set temperature and whether the water in the bathtub 16 is lower than the set water level Is determined, and one of the following four operations is executed based on the determination information.

When the detected water level of the water level sensor 13 is lower than the set water level and the detected temperature of the bathtub temperature thermistor 6 is lower than the set temperature (FIG. 3), the hot water supply control is performed until the detected temperature of the bathtub temperature thermistor 6 reaches the set temperature. The unit 3 repeatedly instructs the heat source control unit 47 via the hot water supply remote controller 5 to issue a reheating instruction, and the heat source control unit 47 executes the reheating operation based on the reheating instruction. Then, when the detected temperature of the bathtub temperature thermistor 6 reaches the set temperature, if the detected water level of the water level sensor 13 is lower than the set water level, the hot water supply control unit 3 operates until the detected water level of the water level sensor 13 becomes the set water level. The hot water supply command is repeatedly commanded to the heat source control unit 47 via the hot water supply remote control 5, and the heat source control unit 47 executes the hot water supply operation based on the hot water supply command. Further, when the detected temperature of the bathtub temperature thermistor 6 reaches the set temperature and the detected water level of the water level sensor 13 is higher than the set water level, the water in the bathtub 16 is changed until the detected water level of the water level sensor 13 reaches the set water level. The hot water supply control unit 3 opens the drainage electromagnetic valve 15 so as to drain the water through the drainage channel 14.

When the water level detected by the water level sensor 13 is the set water level and the detected temperature of the bathtub temperature thermistor 6 is lower than the set temperature (FIG. 3), the hot water supply controller 3 sets the detected temperature of the bathtub temperature thermistor 6 to the set temperature. Until the heat source control unit 47 is repeatedly commanded to repeat the reheating by the hot water supply remote controller 5 until
The heat source control unit 47 performs the additional heating hot water supply operation based on the additional heating command. Then, when the detected temperature of the bathtub temperature thermistor 6 reaches the set temperature, the hot water supply control unit 3 drains the hot water in the bathtub 16 through the drainage channel 14 until the water level detected by the water level sensor 13 reaches the set water level. The electromagnetic valve 15 is opened.

When the detected water level of the water level sensor 13 is lower than the set water level and the detected temperature of the bathtub temperature thermistor 6 is the set temperature (FIG. 3), the hot water supply controller 3 until the detected water level of the water level sensor 13 reaches the set water level. Repeatedly issues a hot water command to the heat source control unit 47 via the hot water supply remote control 5, and the heat source control unit 47 executes a hot water hot water supply operation based on the hot water command. When the detected water level of the water level sensor 13 is the set water level and the detected temperature of the bathtub temperature thermistor 6 is the set temperature (FIG. 3), the operation is not performed.

The operation as described above is continued until the appropriate temperature appropriate amount keep switch 10 is turned ON after the appropriate temperature appropriate amount keep switch 10 is turned on, and the bathtub 16 is maintained.
A state in which hot and cold water of a set temperature is stored at a set water level is maintained.

In this manner, the hot water supply control unit 3 fills the bath water at the set water temperature at the set water level in the bath tub 16 based on the detection information of the water level sensor 13 and the bath tub temperature thermistor 6. In addition, in order to maintain the state of storing hot and cold water at the set temperature in the bathtub 16 at the set water level, the heat source control unit 47 is instructed to supply hot water and the opening / closing operation of the drain solenoid valve 15 is controlled. 47 is configured to execute each operation based on a control command from the hot water supply control unit 3. Therefore, the heat source control unit 47
Only needs to control the hot water supply operation of the hot water supply unit K. Normally, it is possible to use the heat source control means provided in the bath hot water supply heat source unit as it is, and to upgrade the bath hot water supply system. In addition, the bath control unit 4 is installed and the existing remote controller is replaced with the remote controller 5 for hot water supply without replacing the heat source unit for bath water supply.

In order to upgrade the bath hot water supply system by adding a function of keeping a proper temperature and an appropriate amount of operation, a control means for a heat source for controlling only the hot water supply operation of the hot water supply unit shown in FIG. 6 is provided. It is possible to use the hot water supply system as it is, so that the bath tub can be used without changing the existing bath hot water supply system as shown in FIG. 6 as much as possible and reducing the cost in upgrading the bath hot water supply system. It has become possible to provide a bath hot water supply system capable of adding a function of keeping an appropriate temperature and an appropriate amount to maintain a state in which hot and cold water at a set temperature is stored at a set water level in the bath 16.

[Second Embodiment] This second embodiment is another embodiment of the above-described first embodiment, and shows another embodiment of the control operation in the appropriate temperature and appropriate amount keeping operation, and an example thereof will be described. . The configuration of the second embodiment is the same as that of the first embodiment, and a detailed description thereof will be omitted.

The hot water supply control section 3 detects the water level sensor 13 and the detection information of the bath tub temperature thermistor 6 in order to maintain the state of storing the hot water of the set temperature in the bath tub 16 at the set water level in the proper temperature and proper quantity keeping operation. Further, based on the hot water temperature of the hot water supplied from the bath water heater 2, the amount of wastewater to be drained from the bathtub 16 is determined in advance, and the amount of wastewater determined before instructing the heat source control unit 47 to supply hot water is calculated. The opening / closing operation of the drainage electromagnetic valve 15 is controlled so as to drain the water.

More specifically, in the proper temperature and proper quantity keeping operation, when the water level detected by the water level sensor 13 is lower than the set water level and the detected temperature of the bathtub temperature thermistor 6 is lower than the set temperature (FIG. 3), the hot water supply control means Is the water level sensor 1
3 based on the detected water level, the detected temperature of the bathtub temperature thermistor 6, the reheating setting temperature, and the size of the bathtub 16,
A drainage amount to be drained is determined in advance, and the drainage solenoid valve 1 is drained so as to drain the hot water in the bathtub 16 by the determined drainage amount.
After the valve 5 is opened, the hot water supply control unit 3 repeatedly instructs the heat source control unit 47 via the hot water supply remote control 5 to the heat source control unit 47 until the detected temperature of the bathtub temperature thermistor 6 reaches the set temperature.
The heat source control unit 47 performs the additional heating hot water supply operation based on the additional heating command.

In the proper temperature and proper quantity keeping operation, when the detected water level of the water level sensor 13 is the set water level and the detected temperature of the bathtub temperature thermistor 6 is lower than the set temperature (FIG. 3), the hot water supply control means sets the water level sensor 13 Detection water level,
Based on the detected temperature of the bathtub temperature thermistor 6, the set temperature of reheating, and the size of the bathtub 16, the amount of wastewater to be drained is determined in advance, and the hot water in the bathtub 16 is drained by the determined amount of drainage. After opening the drain valve 15, the hot water supply controller 3 repeatedly issues a reheating command to the heat source controller 47 via the hot water supply remote controller 5 until the detected temperature of the bathtub temperature thermistor 6 reaches the set temperature. , Heat source control unit 4
7 performs the additional heating hot water supply operation based on the additional heating instruction.

When the detected water level of the water level sensor 13 is lower than the set water level and the detected temperature of the bathtub temperature thermistor 6 is the set temperature (FIG. 3), and when the detected water level of the water level sensor 13 is the set water level and the bathtub temperature When the detected temperature of the thermistor 6 is the set temperature (FIG. 3), it is the same as in the first embodiment, and therefore, detailed description thereof is omitted. In addition, in the second embodiment, the method of obtaining the amount of drainage to be drained in advance includes the detection water level of the water level sensor 13, the difference between the detection water level and the set water level, and the detection temperature and the set temperature of the bathtub temperature thermistor 6. May be determined on the basis of a temperature difference or the like.

[Other Embodiments] (1) In the first and second embodiments, the drainage path 14 is branched from the hot water supply path 1, and when the hot water in the bathtub 16 is drained during the appropriate temperature and appropriate quantity keeping operation, With the hot water supply from the bath water heater 2 stopped, the drain valve 1
Although the valve 5 is opened to drain water, the hot water in the bathtub 16 may be drained while hot water is supplied from the bath water heater 2.

For example, as shown in FIG. 4, a drain 14 for draining hot water from the bath tub 16 is connected to the bath adapter 7, and when the hot water in the bath tub 16 is drained during the proper temperature and proper quantity keeping operation, The hot water supply control unit 3 issues a reheating instruction to the heat source control unit 47, and opens the electromagnetic valve 15 for drainage to drain the hot water in the bathtub 16.

As described above, in the embodiment in FIG. 4, when the operation in the first embodiment is applied, the hot water in the bath tub 16 is drained while the hot water is supplied from the bath water heater 2, and The water level may be fine-adjusted, for example, by the hot water supply control unit 3 instructing the heat source control unit 47 to add the hot water to the set water level. The pipe diameter and length of the drainage channel 14 may be adjusted so that the unit amount of the supplied hot water and the unit amount of the drainage drained from the bathtub 16 are the same. Then, in the embodiment in FIG. 4, when the operation in the second embodiment is applied, the hot water in the bathtub 16 can be drained while the hot water is supplied from the bath water heater 2 in advance by a drainage amount to be drained.

(2) In the first and second embodiments, the bath tub temperature thermistor 6 comes into contact with the hot water in the bath 16 to detect the temperature of the hot water in the bath 16 as shown in FIG. As described above, a circulation path 48 communicating with the bathtub 16 and circulating the hot water in the bathtub 16 is provided so as to partially share the hot water supply path 1, and the hot water in the bathtub 16 is supplied to the circulation path 48. A circulating pump 49 for circulating water through the tub 16 may be provided, and the bath tub temperature thermistor 6 may contact the hot and cold water in the circulation path 48 to detect the temperature of the hot and cold water in the bath tub 16. That is, the bath control unit 4 is provided with the bath tub temperature thermistor 6, and the hot water supply control unit 3 operates the circulation pump 49 so that the hot water in the bath tub 16 is circulated through the circulation path 48. At times, the bathtub temperature thermistor 6 contacts the hot water in the circulation path 48 to detect the temperature of the hot water in the bathtub 16. In the bath hot water supply system shown in FIG. 5, the water level sensor 13 may be provided in the circulation path 48.

(3) In the first and second embodiments, the bath control unit 4 including the drainage solenoid valve 15, the water level sensor 13, and the hot water supply control unit 3 is provided.
The drainage electromagnetic valve 15, the water level sensor 13, and the hot water supply control unit 3 may be separately provided.

(4) In the first and second embodiments, the hot water supply command, the additional heating command, and the
The hot water supply instruction is configured to be issued to the heat source control unit 47 via the hot water supply remote controller 5, but the control instruction can be directly transmitted and received between the hot water supply control unit 3 and the heat source control unit 47. And the hot water supply command, the additional heating command, and the additional hot water command from the hot water supply control unit 3 are directly transmitted to the heat source control unit 47.
May be configured to be instructed.

(5) In the first and second embodiments, in order to utilize the additional hot water supply operation and the additional hot water supply operation provided in the bath water heater 2, the hot water supply control unit 3 controls the additional hot water supply instruction and the additional hot water supply operation. The hot water command is repeatedly commanded to the heat source control unit 47. However, the control board of the heat source control unit 47 is replaced, and the hot water supply control unit 3 instructs the heat source control unit 47 to keep an appropriate temperature and an appropriate amount. Along with this, the heat source control unit 47 executes the appropriate temperature appropriate amount keep hot water supply operation of supplying hot water at a required hot water temperature such as a temperature higher than the set temperature or the set temperature based on the appropriate temperature appropriate amount keep command. Is also good.

(6) In the first and second embodiments, the bath hot water supply device 2 capable of supplying hot water to the general hot water tap 28 is applied as the bath hot water supply heat source device. As a machine, it is applicable to other bath hot water supply heat source devices such as the bath water heater 2 dedicated to the bathtub 16.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a bath hot water supply system.

FIG. 2 is a schematic configuration diagram of a heat source unit for bath hot water supply.

FIG. 3 is a table for determining the operation of the hot water supply control means in the appropriate temperature and appropriate amount keeping operation.

FIG. 4 is a schematic configuration diagram of a bath hot water supply system in another embodiment.

FIG. 5 is a schematic configuration diagram of a bath hot water supply system in another embodiment.

FIG. 6 is a schematic configuration diagram of a bath hot water supply system in the related art.

FIG. 7 is a schematic configuration diagram of a bath hot water supply system in the related art.

FIG. 8 is a schematic configuration diagram of a bath hot water supply system in the related art.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 hot water supply path 2 hot water supply heat source unit 3 hot water supply control means 4 bath control unit 5 remote control for hot water supply 6 bath tub temperature detection means 13 water level detection means 15 drainage means 16 bath tub 47 heat source control means 48 circulation path K hot water supply unit

Claims (5)

[Claims] 1. A bath water supply heat source comprising: a hot water supply unit for supplying hot water to a bathtub through a hot water supply passage; and a heat source control unit for controlling a hot water supply operation of the hot water supply unit so as to supply hot water at a required temperature. A hot water supply system provided with a water heater, wherein the water heater is in contact with hot water in the bathtub, or in contact with hot water in a circulation path that circulates the hot water in the bathtub in communication with the bathtub. A bathtub temperature detecting means for detecting a temperature of hot water in the bathtub, a water level detecting means installed at a halfway point of the hot water supply path or a halfway point of the circulation path to detect the level of hot water in the bathtub, A drainage unit for draining hot water and a hot water supply control unit, wherein the hot water supply control unit is set in the bathtub based on detection information of the water level detection unit and the bathtub temperature detection unit. temperature The heat source is operated to instruct the heat source control means to supply hot water so as to fill the hot water at a set water level, and the heat source is operated to maintain a state of storing hot water at a set temperature in the bathtub at a set water level. A hot water supply system configured to instruct a hot water supply command to the water control means and to execute a proper temperature and proper quantity keeping operation for controlling a drainage operation of the drainage means. 2. The hot-water supply operation means for supplying hot water at a hot water set temperature at a hot water setting amount in accordance with a hot water command, and a reheating command in response to a hot water command. In addition, when the additional hot water supply operation is performed, the hot water at the additional hot water setting temperature corresponding to the hot water setting temperature is added when the additional hot water command is issued. The hot water supply control means is configured to execute the hot water supply command to the heat source control means in the hot water filling operation, and to maintain the appropriate amount of hot water in the hot water supply operation. The bath hot water supply system according to claim 1, wherein in the operation, the hot water supply system is configured to instruct the heat source control unit to issue the additional heating instruction and the additional hot water instruction. 3. The bath hot water supply system according to claim 1, further comprising a bath control unit including the drainage unit, the water level detection unit, and the hot water supply control unit. 4. A hot water supply remote control for instructing a control command to the hot water supply control means, wherein the hot water supply control means instructs the heat source control means to supply hot water via the hot water supply remote control. The bath hot-water supply system according to any one of claims 1 to 3, which is configured. 5. The water supply control means includes: the water level detection means and the bathtub temperature detection means for maintaining the state of storing hot and cold water at a set temperature in the bathtub at a set water level in the proper temperature and proper quantity keeping operation. Based on the detected information and the hot water supply temperature of the hot water supplied from the bath hot water supply heat source unit, the amount of waste water to be drained from the bathtub is determined in advance, and before the hot water supply is instructed to the heat source control means. The drainage operation of the drainage means is controlled so that the drainage amount is drained.
Bath hot water supply system according to paragraph.