JPH062939A - Bath apparatus - Google Patents

Abstract

(57) [Summary] [Purpose] When circulating the hot water in the bath, the abnormal sound caused by the air bit of the circulation pump and the water level sensor Prevents malfunction and reheating of the heater. [Structure] Reheating heater 1 for heating bath water 6 in a bathtub
3 and a circulation pump 11, a pouring circuit 1 connected to the reheating circuit via a hot and cold water mixing valve 8 and a pouring opening / closing valve 17 for mixing hot water and hot water of the hot water storage tank 1.
A circulating temperature detector 15 for detecting the hot water temperature provided in the reheating circuit, a water level sensor 16 for detecting the water level, a two-way valve 12 for switching between the reheating circuit and the pouring circuit, and the reheating circuit. It is composed of a forward pipe 14 that connects the bathtub, a return pipe 10 and a control unit 21. When the circulation pump 11 operates, the control unit 21 opens the pouring on-off valve 17 and the two-way valve 12 prior to the operation. After hot water is supplied to both the pipe 14 and the return pipe 10, the circulation pump 11 is operated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control of a bath device during a circulating bath of hot water.

[0002]

2. Description of the Related Art As a conventional bath device, there is a device as shown in FIG. In FIG. 2, the water supply port 2 of the hot water storage tank 1 is connected to a water supply source via a pressure reducing valve 3. A heater 4 is provided in the hot water storage tank 1 and is introduced from a hot water outlet 5 to a mixing tap 7 into a bath 6. The water side of the mixing tap 7 is connected to a water supply source.

In the above structure, hot water is stored in the hot water storage tank 1 by the heater 4 using electric power at midnight. When filling the bathtub 6 with hot water, the mixing tap 7 is adjusted to supply hot water at an appropriate temperature. When the bath water is used and the hot water temperature is recovered from the lowered state to the appropriate temperature, the mixing tap 7 is set to a high temperature and the hot water storage tank 1 Hot water was poured into the bathtub 6 to raise the bath temperature.

[0004]

In such a conventional bath apparatus, it is inconvenient because it is necessary to manually fill the bathtub 6 with water or adjust the temperature, and when the hot water in the hot water storage tank 1 is exhausted. There was a problem that it was not possible to reheat the bath water.

The present invention solves the above problems by automating hot water filling and temperature control to improve convenience and eliminate the fear of running out of hot water, and use hot water in a bathtub,
To provide a bath device that prevents abnormal noise due to the air from the circulation pump, malfunction of the water level sensor, accidental heating of the reheating heater, etc. caused by water falling in the circulation pipe of the bath water when drained. It is intended.

[0006]

In order to achieve the above object, the bath device of the present invention has the following configuration.

A reheating circuit comprising a reheating heater for heating bath water, a circulation pump, a circulation temperature detector for detecting hot water temperature, a two-way valve for switching the pouring circuit, and a water level sensor for detecting the water level of bath water. And a pouring circuit connected to the reheating circuit through a hot and cold water mixing valve and a pouring opening / closing valve for mixing the hot water and hot water of the hot water storage tank, a forward pipe connecting the reheating circuit and the bath, and a return When the circulation pump operates, the control unit opens the pouring / opening valve / two-way valve, and after passing hot water to both the forward pipe and the return pipe, the circulation pump is It is controlled to operate.

[0008]

According to the present invention, with the above-described structure, when circulating the hot water in the bath, the control unit opens the pouring on-off valve and the two-way valve prior to the operation, thereby controlling the forward piping and the return piping. After passing hot water to both, the circulation pump is controlled to operate.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a bath device according to the present invention will be described below with reference to the drawings.

In FIG. 1, hot water from a hot water outlet 5 of a hot water storage tank 1 and water supply from a pressure reducing valve 3 are connected to a hot and cold water mixing valve 8. The return pipe 10, the circulation pump 11, the two-way valve 12, the reheating heater 13, and the outflow pipe 14 from the connection adapter 9 of the bathtub 6 return to the bathtub 6 to form a reheating circuit. A circulation temperature detector 15 and a water level sensor 16 are provided in the reheating circuit. From the outlet of the hot and cold water mixing valve 8, a pouring and opening / closing valve 17,
It is connected via a check valve 18 to the reheating circuit of the circulation pump 11 on the downstream side. A vacuum breaking valve 19 is provided in the pouring circuit to separate the water supply source from the bath 6.

In the above structure, the two-way valve 1 is used during automatic pouring.
2 is closed and the circulating pump 11 is stopped and the pouring / opening valve 17 is opened. The mixed hot water adjusted to an appropriate temperature by the hot and cold water mixing valve 8 is poured into the bath 6 from the connection adapter 9 through the outflow pipe 14 of the reheating circuit. Since the return pipe 10 to which the water level sensor 16 is connected is closed at one end by a two-way valve 12, the water pressure of the bath water from the connection adapter 9 is transmitted and the water level sensor 16
When the pressure is detected at, and reaches a set value, the pouring / opening valve 17 is closed and pouring into the bath 6 is stopped.

After that, when the water level in the bathtub 6 is lowered and the water level signal falls below a set value, the pouring on-off valve 17 is opened again to pour water into the bathtub 6 and automatic water replenishment is performed until the bath level reaches the set value. To do.

When the hot water temperature in the bathtub 6 is lowered in the heat retention mode, the bath circulation mode operation is started and the circulation pump 1 is operated.
One drives. At that time, the control unit 21 first determines the two-way valve 12
Open the pouring on / off valve 17 and return the time to the return pipe 10 and the forward pipe 1 as appropriate.
After passing hot water to both 4 and discharging the air in the reheating circuit, the circulation pump 11 is operated to energize the reheating heater 13 to circulate and heat the hot water in the bath 6. When the temperature of the bath water from the return pipe 10 is detected by the circulation temperature detector 15 and reaches the set temperature, the energization of the reheating heater 13 is stopped, the operation of the circulation pump 11 is also stopped, and the reheating is stopped. The reheating is started manually or by the circulation pump 11 at regular intervals.
Drive and circulate. It can be performed when the temperature of the bath water is detected by the temperature detector 15 and becomes lower than the set temperature.

As described above, when the circulation pump 11 is operated, first, the two-way valve 12 and the pouring / opening / closing valve 17 are opened so that the hot water is passed through both the return pipe 10 and the forward pipe 14, so that the air in the pipe is cooled. Therefore, when the hot water in the bathtub 6 is drained, the return pipe 10 and the outgoing pipe 14 of the reheating circuit are discharged.
Depending on the construction condition (piping slope, torii piping, etc.), water in the return pipe 10 and the outflow pipe 14 caused by a slight suction of air from the pipe connection port, etc. may cause a malfunction (circulation) in the bathtub 6. It is possible to prevent abnormal noise due to the air bite of the pump 11, malfunction of the water level sensor 16, and accidents such as empty heating due to air entering the reheating heater 13.

[0015]

As described above, according to the bath apparatus of the present invention, when the circulation pump is operated, the control unit opens the two-way valve / pouring / opening / closing valve so that hot water is passed through both the return pipe and the forward pipe. By doing so, the air in the pipe can be discharged, and the following effects can be obtained.

(1) Eliminating the air bite of the circulation pump,
Prevents the generation of abnormal noise. (2) The water level can be accurately detected by discharging the air in the bath return pipe including the water level sensor.

(3) It is possible to prevent an accident where the reheating heater is heated due to air entering the heater.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a bath device according to an embodiment of the present invention.

FIG. 2 is a configuration diagram of a conventional bath device.

[Explanation of symbols]

 1 Hot water storage tank 6 Bathtub 8 Hot water mixing valve 10 Return pipe 11 Circulation pump 12 Two-way valve 13 Reheating heater 14 Outflow pipe 15 Circulation temperature detector 16 Water level sensor 17 Water pouring valve

Claims (1)

[Claims] 1. A supplementary heater comprising a reheating heater for heating bath water, a circulation pump, a circulation temperature detector for detecting hot water temperature, a two-way valve for switching a pouring circuit, and a water level sensor for detecting the water level of bath water. A heating circuit, a pouring circuit connected to the reheating circuit via a hot and cold water mixing valve and a pouring opening / closing valve for mixing hot water and hot water in a hot water storage tank, and a forward pipe connecting the reheating circuit and the bath. , A return pipe, and a control unit, the control unit, when the circulation pump operates, after opening the pouring on-off valve / two-way valve, after passing hot water to both the forward pipe and the return pipe, A bath device in which the circulation pump is controlled to operate.