JPH0650601A - Hot water feeding device - Google Patents

Abstract

PURPOSE:To prevent reduction of the temperature of not water in a bath tub owing to energization to a heater during circulation of air bubbles and to improve using convenience, in a hot water feeding device to perform air bubble circulation operation in a bath tub. CONSTITUTION:A bath tub hot water circulating circuit 40 comprises a circulating pump 37 with the aid of which bath tub hot water is circulated through a bath tub 21, a temperature detector to detect a bath tub hot water temperature, a flow detector to detect the circulating flow of bath tub hot water, a heater 39 to perform heating of bath tub hot water, and a bath tub hot water circulating circuit 40. Further, an air control valve 41 to control introduction of air and an air introduction circuit 42 extending from an air control valve 41 to the bath tub 21 are provided. An operation signal for a setter 22 having an air bubble operation part 43 and a heat insulating operation part 44 is inputted to a controller 24. The controller 24 are caused to simultaneously perform heat insulating circulating operation to control the heater 39 and the circulating pump 37 until temperature is adjusted to a set value through the working of a heat insulation operating part 44 based on a signal from a temperature detector 30 and air bubble circulating operation to control the circulating pump 37 and the air control valve 41 through the working of the air bubble operation part 43.

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 apparatus for preventing a decrease in bath water temperature when bubbles are used during a warming operation of a hot water supply apparatus having a bubble generating function.

[0002]

2. Description of the Related Art Conventionally, this type of hot water supply apparatus with a bubble function has been constructed as shown in FIG. The configuration will be described below.

As shown in the figure, the bath water circulation circuit is a closed circuit in which the bath adapter-2 of the bathtub 1 passes through the three-way valve 3, the circulation pump 4, the bath heat exchanger 5, and the bath adapter-2. I am configuring. The bath heat exchanger 5 burns the gas from the bath gas pipe 8 branched from the gas pipe 6 to the gas proportional control valve 7 by the burner 9, and the air is supplied and burned by the bath combustion fan 10. And heat the bath water. Further, the air introduction circuit extends from the bubble electromagnetic valve 11 to the bath adapter-2. When filling water, the pouring valve 12 is opened, the water from the water supply pipe 13 is heated by the hot water supply heat exchanger 14, the water amount is adjusted by the water amount proportional valve 15, and the three-way valve 3 to the circulation pump 4 and heat exchange for bath. It passes through the vessel 5 and is poured into the bathtub 1. The controller 18 controls the three-way valve 3, the circulation pump 4, and the bath heat exchanger 5 by operating the heat retention operation unit 17 of the operation unit 16 to reheat the bath water. When performing bubble operation, operation unit 1
By operating the bubble operation unit 19 of 6, the controller 18 controls the three-way valve 3, the circulation pump 4, the heat exchanger 5 for bath, and the electromagnetic valve 1 for bubble.
1 was controlled to generate bubbles in the bath.

[0004]

In such a conventional hot water supply apparatus, when the bubble operating portion 19 is operated after the heat retaining operating portion 17 is operated, the controller 18 once stops the heat retaining circulating operation and then starts the bubble circulating operation. I was going. For this reason, there is no function of keeping heat during bubble circulation, and there is no way but to carry out heat keeping and bubble operation independently. Therefore, when the bath water temperature is lowered during bubble circulation, the bubble circulation operation is performed once in either order by operating the heat retention operation unit 17 to perform the heat retention circulation operation, or operating the bubble operation unit 19 during the heat retention circulation. The control method was such that the warm insulation circulation operation did not occur unless the state stopped. Therefore, there is a problem that there is no means for raising the bathtub hot water temperature during the bubble circulation operation.

The present invention is intended to solve the above problems, and it is an object of the present invention to prevent a decrease in bathtub hot water temperature due to bubble circulation operation and improve usability.

[0006]

In order to achieve the above object, the present invention provides a bathtub and a circulation pump for circulating the bathwater.
A bath water circulation circuit composed of a temperature detector for detecting the bath water temperature, a flow detector for detecting the circulating flow of the bath water, and a heater for heating the bath water, and an air control valve for controlling air introduction, and An air introduction circuit from the air control valve to the bath, a controller for controlling the temperature detector, the flow detector, the heater, the circulation pump, the air control valve, a bubble operation unit and a heat retention operation unit, and A controller for setting an operating signal to the controller, wherein the controller controls the heater and the circulation pump until the temperature reaches a set temperature based on the signal from the temperature detector by the operation of the temperature maintaining operation unit. The first problem solving means is that the operation and the bubble circulation operation for controlling the circulation pump and the air control valve can be performed at the same time by operating the bubble operation unit.

In the controller of the first means for solving the problems, the warming circulation limiting time interval T1 is provided in the warming circulating operation and the bubble circulation limiting time interval T2 is provided in the bubble circulating operation, and the relationship between them is T1> T2. When the temperature reaches the set temperature during the warming circulation operation, control is performed to restart the warming circulation operation with a pause of the pause limitation time interval T3, and after the bubble circulation limitation time interval T2 at the time of simultaneous use with the bubble circulation operation, pause. A second problem solving means is to perform control to continue the warm insulation circulation operation when the bathtub hot water temperature does not reach the set temperature even within the time limit T3.

Further, as a third means for solving the problems, the controller of the first means for solving the problems is such that, when the bubble operating portion is operated to carry out the bubble circulating operation, the control for also performing the warming circulation operation is carried out. There is.

[0009]

According to the first means for solving the above problems, the present invention provides:
The warming circulation operation that controls the heater and the circulation pump by operating the heat retention operation section and the bubble circulation operation that controls the circulation pump and the air control valve by operating the bubble operation section can be used together, and the bath water temperature caused by the bubble circulation operation can be combined. Can be prevented.

Further, by the second means for solving the problem, the warming circulation operation can be continued by the bath water temperature after the bubble circulation operation,
It is possible to prevent the bath temperature from decreasing.

Further, by the third means for solving the problems, the warming circulation operation can be added when the bubble operating portion is operated,
It is possible to prevent a decrease in bathtub water temperature caused by operating the bubble operation unit.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIG.

As shown in the figure, when filling the bathtub 21 with hot water, a signal for opening the valve is sent from the controller 24 to the hot water solenoid valve 25 by operating the hot water filling operation portion 23 of the setting device 22. Water from the water supply pipe 26 passes through the pressure reducing valve 27, and then divided into two parts, one of which is guided to the hot water storage tank 28,
The other directly enters the mixing valve 29, and the mixing valve 2 is fed from the hot water tank 28.
9 is supplied with hot water, and the controller 24 controls the mixing valve 29 while the downstream temperature detector 30 detects the hot water temperature so that the hot water temperature set by the setting device 22 is mixed.
The hot water having a proper temperature mixed by the mixing valve 29 is supplied to the bathtub 21 from the outgoing pipe 33 leading to the bath adapter 32 through the tapping solenoid valve 25 and the vacuum breaking valve 31. During the bubble circulation or the warming circulation operation, the controller 24 drives the two-way valve 34 that switches between the hot water supply circuit and the circulation circuit, and the water level detector 36 that detects the water level from the bath adapter 32 through the return pipe 35. , Circulating pump 3 for circulating bath water
7, two-way valve 34, flow detector 38 for detecting the circulating flow of bath water, temperature detector 30 for detecting the bath temperature, and heater 39 for heating the bath water. A bath water circulation circuit 40 leading to is formed.
Further, the air for bubbles is introduced from the air introduction circuit 42 that leads from the air control valve 41 that controls the introduction of air to the bath adapter 32. The setting device 22 is provided with a bubble operation part 43 and a heat retention operation part 44 in addition to the hot water filling operation part 23, and the controller 24 operates the heat retention operation part 44 based on the signal of the temperature detector 30. The warming circulation operation for controlling the heater 39 and the circulation pump 37 until reaching the set temperature and the bubble circulation operation for controlling the circulation pump 37 and the air control valve 41 by the operation of the bubble operation unit 43 can be performed at the same time.

In the above structure, the flow shown in FIGS. 2 (a) and 2 (b) is performed.
The operation will be described with reference to the chart. During bubble circulation, the controller 24 turns on the two-way valve 34 by turning on the bubble operation unit 43 of the setting device 22 as shown in FIG. 2 (a). After forming the bath water circulation circuit 40, the circulation pump 37,
By driving the air control valve 41, air bubbles are ejected from the bath adapter 32 to the bath 21. When the heat retention operation unit 44 is turned on in this state, the heater 39 is operated to raise the bathtub hot water temperature by the circulation in the bathtub hot water circulation circuit 40. The bath water temperature is detected by the temperature detector 30, and when the preset bath temperature is reached, the controller 24 causes the heater 3 to
9. Stop the circulation pump 37 and close the two-way valve 34. In this way, the bubble circulation operation for controlling the circulation pump 37 and the air control valve 41 and the heat retention circulation operation for controlling the heater 39 and the circulation pump 37 can be simultaneously performed. Next, when the bubble operation unit 43 is turned off, the controller 24 turns off the air control valve 41 in the state where the bath water circulation circuit 40 is formed and only performs the heat retention circulation operation. In this state, the heat retention operation unit 44 is turned off. Then it stops.

Next, during the warming circulation operation, by turning on the warming operation portion 44 of the setting device 22 as shown in FIG. 2B, the controller 24 opens the two-way valve 34 and the bath water circulation circuit 40. After forming, the circulation pump 37 and the heater 39 are controlled to raise the bath water temperature by the circulation in the bath water circulation circuit 40. The bath water temperature is detected by the temperature detector 30, and when the preset bath temperature is reached, the controller 24 stops the heater 39 and the circulation pump 37 and closes the two-way valve 34. When the bubble operating unit 43 is turned on in this state, the air control valve 41 is driven to cause bubbles to flow from the bath adapter 32 to the bathtub 2.
Erupted to 1. In this way, the warming circulation operation for controlling the heater 39 and the circulation pump 37 and the bubble circulation operation for controlling the circulation pump 37 and the air control valve 41 can be performed at the same time. Next, when the heat retention operation unit 44 is turned off, the controller 24
Turns off the heater 39 in a state where the bath water circulation circuit 40 is formed and performs only the bubble circulation operation. In this state, when the bubble operation unit 43 is turned off, the operation is stopped.

As described above, according to this embodiment, the warming operation for controlling the heater 39 and the circulation pump 37 until the temperature reaches the set temperature based on the signal from the temperature detector 30 by the operation of the warming operation section 44, and the bubble operation. Since the bubble circulation operation for controlling the circulation pump 37 and the air control valve 41 can be performed at the same time by operating the portion 43, it is possible to prevent the bath water temperature from decreasing due to the bubble circulation operation.

Next, a second embodiment of the present invention will be described. The controller 24 in FIG. 1 provides a warming circulation limiting time interval T1 in the warming circulating operation and a bubble circulation limiting time interval T2 in the bubble circulating operation, and establishes the relationship between them as T.
1> T2, and when the temperature reaches the set temperature during the warming circulation operation, control is performed to restart the warming circulation operation with a pause of the pause limitation time interval T3, and the bubble circulation limitation time interval T2 when used simultaneously with the bubble circulation operation. After that, if the bathtub hot water temperature has not reached the set temperature even within the pause limit time interval T3, control is performed to continue the heat retention circulation operation. The other structure is the same as that of the first embodiment.

In the above structure, the flow shown in FIGS. 3 (a) and 3 (b) is performed.
The operation will be described with reference to the chart. In the warming circulation operation, if the warming operation unit 44 is operated as shown in FIG.
The controller 24 opens the two-way valve 34 and the bath water circulation circuit 4
After forming 0, the circulation pump 37 and the heater 39 are operated to raise the bath water temperature by the circulation in the bath water circulation circuit 40. The bath water temperature is detected by the temperature detector 30, and when it reaches a preset water temperature, the controller 24 stops the heater 39 and the circulation pump 37 and closes the two-way valve 34. When the bath water temperature reaches the set bath temperature, the operation is stopped at the rest limit time interval T3 (for example, 10 minutes), then the two-way valve 34 is opened, the circulation pump 37 and the heater 39 are operated, and the bath water temperature changes. Heating is continued until the set hot water temperature is reached, and the controller 24 stops the heater 39 and the circulation pump 37 and turns the two-way valve 3 on.
Close 4 The operation up to the above is performed by the heat insulation circulation time limit interval T
Repeat until 1 (eg 4 hours). When the warming circulation operation is stopped by the operation of the warming operation unit 44 within the warming circulation limit time interval T1, only the heater 39 is used if the interrupt control is performed during the bubble circulating operation, and the two-way valve is used if the interrupt control is not performed. 34 is closed, and the operations of the circulation pump 37 and the heater 39 are stopped. At the stage when the heat retention circulation limit time interval T1 has passed,
If the interrupt control is performed during the bubble circulation operation, the routine returns to the control routine of the bubble circulation operation, that is, the position B in FIG. 3 (b).
As for the operation of bubble circulation, when the bubble operating portion 43 is operated as shown in FIG. 3B, the two-way valve 34 is opened and the circulation pump 37 and the air control valve 41 are operated to generate bubbles in the bath 21. Let The air control valve 41 is stopped at the bubble circulation restriction time interval T2 (for example, 15 minutes) from the operation of the bubble operating unit 43. Thereafter, if the interrupt control is performed during the warming circulation operation, the routine returns to the control routine of the warming circulation operation, that is, the position A in FIG. 3 (a). In the meantime, when the bubble circulation operation is stopped by the operation of the bubble operation unit 43, only the air control valve 41 is used if the interrupt control is performed during the heat retention circulation operation, and the two-way valve 34 is used if the interrupt control is not performed. Closed, circulation pump 37 and air control valve 4
Stop 1 If the bath hot water temperature is lower than the set hot water temperature at the end of the bubble circulation operation of the interrupt control, it is possible to prevent the bath hot water temperature from decreasing by continuously energizing the heater 39.

The symbol A in FIG. 3 (a) indicates the interruptable position of the control routine for bubble circulation operation.
The symbol B in (b) indicates an interruptable position of the control routine for the warming circulation operation.

As described above, according to the present embodiment, the warming circulation limiting time interval T1 is provided in the warming circulating operation, and the bubble circulation limiting time interval T2 is provided in the bubble circulating operation. When the temperature reaches the set temperature during operation, control is performed to restart the warming circulation operation with a pause of the pause limitation time interval T3, and after the bubble circulation limitation time interval T2 when used simultaneously with the bubble circulation operation, the pause limitation time interval T3. Even if it is inside, if the bath water temperature does not reach the set temperature, the control to continue the warming circulation operation is performed.Therefore, the warming circulation operation can be continued by the bath water temperature after the bubble circulation operation is completed. It is possible to prevent the bath water temperature from decreasing due to the circulation operation.

Next, a third embodiment of the present invention will be described. The controller 24 in FIG. 1 controls the bubble operating unit 43 to also perform the warming circulation operation when performing the bubble circulation operation. The other structure is the same as that of the first embodiment.

In the above structure, the operation will be described with reference to the flow chart of FIG. 4. By operating the bubble operating section 43, the two-way valve 34 is opened to form the bath water circulation circuit 40, and then the circulation is performed. Pump 37, heater 39, air control valve 4
1 operates to both generate bubbles in the bath 21 and heat the bath hot water. After that, when the bath water temperature reaches the set bath temperature, the heater 39 is stopped, and when the bath water temperature decreases, the heater 39 is energized again. If the bubble circulation restriction time interval T2 (for example, 15 minutes) has passed since the bubble operating unit 43 was operated, the operation is stopped.

As described above, according to this embodiment, the controller 24
When operating the bubble operating unit 43 to perform bubble circulation operation,
Since the control for performing the warming circulation operation is also performed, the warming circulation operation can be performed at the same time as the operation of the bubble operating unit, and the decrease in the bath water temperature due to the bubble circulation operation can be prevented.

[0024]

As is apparent from the above embodiments, according to the present invention, a bathtub, a circulation pump for circulating the bathtub hot water, a temperature detector for detecting the bathtub hot water temperature, and a flow for detecting the circulating flow of the bathtub hot water. A bath water circulation circuit composed of a detector and a heater for heating the bath water, an air control valve for controlling air introduction and an air introduction circuit from the air control valve to the bath, the temperature detector, and a flow. A detector, a heater, a circulation pump, a controller that controls the air control valve, and a setting device that has an air bubble operating unit and a heat retaining operating unit and sends an operation signal to the controller, and the controller, A warming circulation operation that controls the heater and the circulation pump until a set temperature is reached based on a signal from the temperature detector by operating the heat retention operating portion, and the circulation pump and the air control valve by operating the bubble operating portion. Bubble circulation control Since There was allow simultaneously, it is possible to carry out the heat insulating circulation operation when bubbles circulating simultaneously, it is possible to prevent the deterioration of the bath hot water temperature at the time of bubble circulation, thereby improving the usability.

Further, the controller provides a warming circulation limiting time interval T1 in the warming circulating operation and a bubble circulation limiting time interval T2 in the bubble circulating operation, and the relationship between them is T1> T.
2. When the temperature reaches the set temperature during the heat retention circulation operation, control is performed to restart the heat retention circulation operation with a pause of the pause limitation time interval T3, and after the bubble circulation limitation time interval T2 during simultaneous use with the bubble circulation operation, Even when the bathtub hot water temperature has not reached the set temperature even within the pause limit time interval T3, the control for continuing the hot water circulation operation is performed. Therefore, the hot water circulation operation is performed by the bath water temperature after the bubble circulation operation is completed. Can be continued, and a decrease in bathtub water temperature due to bubble circulation operation can be prevented.

Further, since the controller controls the bubble warming circulation operation when the bubble operating section is operated to perform the bubble circulating operation, the warming circulation operation can be performed simultaneously with the operation of the bubble operating section. It is possible to prevent the bath water temperature from lowering due to the bubble circulation operation.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing a hot water supply device according to a first embodiment of the present invention.

[Fig. 2] (a) Flow chart of bubble circulation operation of the hot water supply apparatus (b) Flow chart of warm circulation operation of the hot water supply apparatus

FIG. 3 (a) Flow chart for warming circulation operation of hot water supply apparatus according to second embodiment of the present invention (b) Flow chart for bubble circulation operation of hot water supply apparatus

FIG. 4 is an operation flow chart of the hot water supply apparatus according to the third embodiment of the present invention.
Chart

FIG. 5 is a configuration diagram of a conventional hot water supply device.

[Explanation of symbols]

 21 Bathtub 22 Setting Device 24 Controller 30 Temperature Detector 37 Circulation Pump 38 Flow Detector 39 Heater 40 Bath Bath Hot Water Circulation Circuit 41 Air Control Valve 42 Air Introducing Circuit 43 Bubble Operation Section 44 Heat Keeping Operation Section

Claims (3)

[Claims] 1. A bathtub, a circulation pump for circulating bath water, a temperature detector for detecting bath temperature, a flow detector for detecting circulating flow of bath water, and a heater for heating bath water. The bathtub hot water circulation circuit, the air control valve for controlling the air introduction and the air introduction circuit from the air control valve to the bath, and the temperature detector, the flow detector, the heater, the circulation pump, and the air control valve are controlled. A controller, and a setting device having a bubble operation part and a heat retention operation part and sending an operation signal to the controller, wherein the controller is set based on a signal of the temperature detector by an operation of the heat retention operation part. A hot water supply apparatus capable of simultaneously performing a warming circulation operation for controlling the heater and the circulation pump until the temperature reaches a temperature and a bubble circulation operation for controlling the circulation pump and the air control valve by operating the bubble operation unit. 2. The controller provides a warming circulation limiting time interval T1 in the warming circulating operation and a bubble circulation limiting time interval T2 in the bubble circulating operation, and sets these relationships to T1> T2, and sets during the warming circulating operation. When the temperature is reached, control is performed to restart the heat retention circulation operation with a pause of the pause limitation time interval T3, and within the pause limitation time interval T3 after the bubble circulation limitation time interval T2 when used simultaneously with the bubble circulation operation. The hot water supply apparatus according to claim 1, wherein when the bathtub hot water temperature has not reached the set temperature, control for continuing the warm insulation circulation operation is performed. 3. The hot water supply apparatus according to claim 1, wherein the controller controls to perform a heat retention circulation operation when the bubble operation portion is operated to perform the bubble circulation operation.