JPH0724483A - Circulation treating device for bath - Google Patents

Abstract

PURPOSE:To enable a user to have a comfortable bath for 24 hours at all times with freedom from maintenance by providing the device with a circulation route which can be changed over to a circulation operation to filter bath tub water, a back washing operation to wash a filter vessel and a washing operation to wash the salts sticking to the electrode of an ozonizer. CONSTITUTION:The hot water in the bath tub 1 is sucked and circulated in a direction A by operation of a circulation pump 2 at the time of the ordinary circulation operation. The gaseous ozone generated by the ozonizer 4 is incorporated into the hot water at the time of passing the hot water through an ejector 3 and is purified and sterilized during the passage in the filter vessel 5 at this time. The back washing operation is executed at a ratio of once a day and the back washing operation at a ratio of about every 10000 hours during the operation of the device. Respective three-way valves 11 to 13 are changed over in a direction B to pass the hot water and to discharge the contaminating materials filtered by filter media 6 in the filter vessel 5 together with the hot water from a drain port 14 at the time of the back washing operation. The three-way valves 11, 13 are changed over to the direction B and the three-way valve 12 is changed over to the direction A' to flow the hot water into the electrode of the ozonizer 4, by which the washing of the electrode is executed at the time of the back washing operation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bath circulating treatment apparatus using an ozone sterilization method.

[0002]

2. Description of the Related Art A bath circulating treatment device has been in widespread demand because it does not require bath water exchange and can be bathed for 24 hours at any time. At present, most bath circulation treatment devices on the market purify and deodorize bath water using biological treatment, but in the sterilization method of bath water, ultraviolet sterilization lamps or ozone sterilization devices are used. There is.

A conventional bath circulation processing device using an ozone sterilizer will be described below. In FIG. 2, 1 is a bath, 2 is a pump for circulating bath water, 3 is an ejector for sucking ozone gas, 4 is an ozonizer, 5 is a filtration tank for filtering bath water for further sterilization and deodorization, 6 is a filter medium, 7 is an air vent valve for exhausting ozone gas, 8 is an ozone decomposing catalyst device for decomposing exhaust ozone gas, 9 and 10 are respectively suction and discharge ports of bath water, and 11, 12 and 13 are water flows. Three-way valve for switching
Reference numeral 14 is a drain port for draining the backwash water.

The operation of the bath circulation processing device during circulation and backwashing will be described below. During circulation, the bath water is sucked into the device from the suction port 9 by the circulation pump 2, the three-way valve 11 guides the water flow in the direction A, and the ozone gas generated by the ozonizer 4 is sucked into the pipe by the injector 3 on the way. It is circulated in a state of gas-liquid mixture with bath water, guided by the three-way valve 12 in the direction A, that is, into the filtration tank 5, and filtered by the filter medium 6. Filtered bath water is a three-way valve 1
It is made to flow in the direction A by 3 and returned to the bathtub 1 again from the discharge port 10.

On the other hand, at the time of backwashing, bath water is sucked into the apparatus from the suction port 9 by the circulation pump 2, the three-way valves 11 and 13 guide the water flow in the B direction, and the filter medium 6 in the filter tank 5 is sucked.
It moves to the upper part of the filter tank 5 together with the contaminants therein, is guided in the direction B by the three-way valve 12, and is discharged from the drain port 14 as backwash water.

[0006]

However, in the conventional bath circulation processing apparatus using the ozonizer 4,
Ozonizer 4 deteriorates with time (ammonium salt adheres to the electrode surface of Ozonizer 4 and prevents discharge)
However, since the amount of ozone generated decreases, not only sterilization,
The effects of purification and deodorization decrease, and the basic performance of the system cannot be satisfied.

The object of the present invention is to sterilize and purify bath water.
It is an object of the present invention to provide a bath circulation treatment device that prevents the deodorizing effect from decreasing.

[0008]

A bath circulation treatment apparatus of the present invention comprises a bath, a filtration tank for filtering bath water, a circulation path provided between the bath and the filtration tank, and a circulation path provided in the middle of the circulation path. It is equipped with a pump that circulates the bath water and an ozonizer that is provided in the middle of the circulation path.The circulation path includes a circulation operation for filtering the bath water, a backwash operation for cleaning the filtration tank, and a bath water for the ozonizer. It is possible to switch to a cleaning operation for cleaning the salt adhering to the electrode of the ozonizer by introducing the above.

[0009]

According to the structure of the present invention, the ammonium salt generated on the electrode surface by the operation of the ozonizer can be removed by the washing water by switching the circulation path to the washing operation. Therefore, it is possible to sterilize, purify and deodorize bath water for a long period of time by constantly performing stable discharge on the electrode surface of the ozonizer and constantly generating a constant amount of ozone gas.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described with reference to FIG. FIG. 1 is a schematic view of a bath circulation treatment apparatus according to an embodiment of the present invention. In FIG. 1, reference numeral 1 is a bathtub (300 liters), which is filled with hot water and equipped with a suction port 9 and a discharge port 10 of the hot water. On the other hand, the bath circulation treatment device is a circulation pump 2 (output 60 W), an ozonizer 4 (ozone gas concentration: 175 ppm, gas flow rate: 2 liters / min) that generates ozone gas for the purpose of sterilizing and purifying hot water, and the generated ozone gas. Ejector 3 for sucking and mixing in warm water, solenoid valve 17 for restricting the passage of warm water to the ozonizer 4, and in addition to filtering hot water, to perform gas-liquid mixing and gas-liquid separation of ozone gas and warm water The filter tank 5 has a filter medium 6 inside, a gas vent valve 7 for discharging the gas-liquid separated ozone gas to the outside, and an ozone decomposition catalyst 8 for decomposing and discharging the ozone gas. Has been done.

The operation of the bath circulation processing device during each operation (circulation, backwashing, cleaning) will now be described. In the circulation operation, the hot water in the bathtub 1 is sucked from the suction port 9 into the bath circulation treatment device by the circulation pump 2, guided to the direction A by the three-way valves 11 and 12, and is ejected by the ejector 3 to perform purification and sterilization on the way. The ozone gas generated by the ozonizer 4 is sucked and circulated up to the inside of the filtration tank 5 in a gas-liquid mixed state. After that, the hot water is separated from the insoluble ozone gas in the filtration tank 5 and is purified and sterilized at the same time, and after further filtering, is guided in the direction A by the three-way valve 13, circulates in the device, and is again discharged from the water discharge port 10 to the bathtub 1. Returned to. on the other hand,
The separated ozone gas is decomposed by the ozone decomposition catalyst 8 through the gas vent valve 7 and is exhausted to the outside.

The backwash operation is carried out once a day for 1 minute, and the operation timing is controlled by a 24-hour timer. The backwash operation is carried out 18 hours after the last jet operation of the day is confirmed. I do. As for the flow of hot water, the hot water in the bathtub 1 is sucked from the suction port 9 into the bath circulation processing device by the circulation pump 2, passes through the three-way valves 11, 13, 12 in this order, and any of the three-way valves 11, 13, 12 is flown. Also in (1), the water flow is guided in the B direction and is discharged to the outside from the drain port 14 together with the pollutant filtered by the filter medium 6 in the filter tank 5.

The cleaning operation is carried out once every 10,000 hours for 20 seconds. Alternatively, water is supplied once a year for 30 seconds at a flow rate of 30 liters / min. As for the flow of hot water, the hot water in the bathtub 1 is sucked from the suction port 9 into the bath circulation processing device by the circulation pump 2, and the three-way valve 1
B direction for 1 and 13 and A'for three-way valve 12.
The hot water is guided in the direction, the electromagnetic valve 17 is opened, and the hot water flows into the electrode of the ozonizer 4, thereby dissolving and removing the ammonium salt generated on the surface of the electrode. The hot water from which salt has been removed is discharged to the outside through the drain port 18. In addition, since this salt has a very high solubility in water, it can be easily removed with warm water. With the above operation modes, stable ozone treatment is always performed.

Next, a circulation test of hot water was conducted using the bath circulation treatment apparatus of the embodiment shown in FIG. 1 and the conventional bath circulation treatment apparatus shown in FIG. In the hot water circulation test, five people bathed each day, and the concentration of ozone gas generated from the ozonizer and the turbidity of hot water every 24 hours were examined for 20,000 hours. The results are shown in Table 1.

[0015]

[Table 1] As is clear from Table 1, in the conventional example, the concentration of ozone generated from the ozonizer was reduced by 10% from the initial level 10,000 hours after the start of operation, and by 54% after 20,000 hours, the hot water was reduced. Turbidity has risen to 4.8 °. On the other hand, in the example, 10,000
It was confirmed that the turbidity of warm water can be suppressed to a low level by maintaining the initial ozone generation amount by washing the ozonizer once a time and constantly performing a stable ozone treatment.

[0016]

The bath circulation treatment apparatus of the present invention can remove the ammonium salt generated on the electrode surface by the washing water by the operation of the ozonizer by switching the circulation path to the washing operation. Therefore, it is possible to sterilize, purify and deodorize bath water for a long period of time by constantly performing stable discharge on the electrode surface of the ozonizer and constantly generating a constant amount of ozone gas. Also,
It is possible to provide an effect that it is possible to provide a bath circulation processing device that does not require periodical replacement of the ozonizer and is maintenance-free and that enables a comfortable bathing 24 hours a day.

[Brief description of drawings]

FIG. 1 is a schematic view of a bath circulation treatment apparatus according to an embodiment of the present invention.

FIG. 2 is a schematic view of a conventional bath circulation processing apparatus.

[Explanation of symbols]

 1 Bathtub 2 Pump 3 Ejector 4 Ozonizer 5 Filtration tank 9 Water inlet 10 Water outlet 11, 12, 13 Three-way valve 14, 18 Drainage port 17 Solenoid valve

Claims (1)

[Claims] 1. A bathtub, a filter tank for filtering bathwater, a circulation path provided between the bathtub and the filtration tank, and a pump provided in the middle of the circulation path for circulating the bathwater. A bath circulation treatment apparatus comprising an ozonizer provided in the middle of the circulation path, wherein the circulation path includes a circulation operation for filtering bath water, a backwash operation for cleaning the filtration tank, and the ozonizer. A bath circulation processing device, which can be switched to a washing operation for guiding bath water to wash salts attached to the electrodes of the ozonizer.