JPH08141329A - Filter tank of bath water circulation/purification device - Google Patents

Abstract

PURPOSE: To dispense with the work to remove a filter medium out of a filter tank and to efficiently purify bath water by installing an ultrasonic oscillator at a filter tank and at the same time, injecting a sufficient quantity of compressed air into the bottom of the filter tank. CONSTITUTION: A granular filter medium is charged in the filter tank 5 of a bath water circulation/purification device 1, and a compressed air inflow pipe 14 is installed in bath water inflow piping connected to the lower part of the filter tank 5 through an air inflow valve 11. In addition, a three-way valve 12 is installed in bath water outflow piping connected to the upper part of the filter tank 5, and ultrasonic oscillators 13 are mounted on the outer wall of the filter tank 5. When cleaning the filter medium in the filter tank 5, the three-way valve 12 is switched to a drain direction, and the ultrasonic oscillator 13 is activated to open the air inflow valve 11 so that the compressed air is caused to flow into the filter tank 5. Thus the filter medium is cleaned by the synergistic effect of ultrasonic oscillation and aeration by the compressed air.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter tank of a bath water circulation purification device for cleaning a filter medium in the bath water circulation purification device.

[0002]

2. Description of the Related Art Bath water is contaminated with fat, sweat, dust, etc. adhering to the skin due to its use.
Since the number of bacteria increases, the bath water is continuously circulated and purified by a bath water circulation purification device having a filtering means and a sterilizing means. A filter medium such as barley stone or a ceramic carrier is filled in the inside of the filter tank of such a bath water circulation purifying apparatus, and the pollutant of the circulating bath water is attached to the filter medium to filter the bath water.

The filter material is required to be washed about once every half a year because the surface of the filter material is deteriorated in filtration performance due to the adherence of contaminants when it is continuously used, and the filter material is taken out from the filter tank and washed every time. However, since the work of taking out the filter medium requires a great deal of labor, ultrasonic cleaning (Japanese Patent Laid-Open No. 4-1620) is used.
No. 5), ozone cleaning (Japanese Patent Laid-Open No. 4-104889), etc., and recently, an ultrasonic oscillator is installed in a filter tank, and ultrasonic waves are applied to the filter medium in combination with ozone gas to synergize them. The effect promotes the peeling of the deposit.

In the method of cleaning the surface of the filter medium by applying ultrasonic waves to the filter medium described above, the sterilizing power is deteriorated with a small amount of ozone even if ozone gas is used together, and the filter medium is damaged if a large amount of ozone gas is used. Therefore, the amount of ozone gas used is limited. Also, since a small amount of ozone gas has a small ability to aerate, which has a slight vibration effect on rising bubbles, even if contaminants are separated from the surface of the filter medium by ultrasonic waves,
The separated pollutants are sewn in the gaps between the filter media and cannot be smoothly carried to the drain pipe, so that the cleaning effect is small.

[0005]

DISCLOSURE OF THE INVENTION The present invention eliminates the need to remove the filter medium from the filter tank when cleaning the filter medium in the bath water circulation purification apparatus, which eliminates contaminants from the filter material by ultrasonic action. It is intended to provide a filtration tank capable of further promoting the peeling action and performing efficient cleaning.

[0006]

SUMMARY OF THE INVENTION The present invention is a bath water circulation purifying apparatus in which bath water in a bathtub is connected by a circulation pump and a filtration tank in this order in an upward flow to the filtration tank. A three-way valve for switching, which is connected to a drain pipe, is provided between the filtration tank and the bath for passing water, and an ultrasonic oscillator is attached to the filtration tank to filter the bath water circulation purification device. In the tank, a means for introducing compressed air is provided in a pipe line between the circulation pump and the filtration tank. Further, in the present invention, the compressed air introduction means to the pipeline is not particularly limited, but it is simple equipment to dispose the air inflow valve and the compressed air inflow pipe so that compressed air can be introduced into the pipeline. It is preferable because the cleaning effect for a period of time can be achieved.

[0007]

In the present invention, the ultrasonic oscillator is installed in the filtration tank, and a sufficient amount of compressed air flows into the lower portion of the filtration tank. Therefore, when cleaning the filter medium in the filter tank, ultrasonic waves act on the filter medium to remove the contaminants adhering to the surface of the filter medium from the filter medium at the same time.
The separated pollutants are removed from the filter medium by aeration having a slight vibration effect of rising bubbles by a sufficient amount of compressed air flowing into the bath water from the lower part of the filter tank. After the contaminants are almost removed from the filter medium, the inside of the filter tank is rinsed and washed only by aeration.

[0008]

The present invention will be described below based on the illustrated embodiments, but the present invention is not limited to these embodiments. FIG. 1 is a flow diagram of a bath water circulation purification device according to the present invention. In the figure, the bath water circulation purification apparatus indicated by reference numeral 1 circulates the bath water in a bath 2 through a pipe with a circulation pump 3, removes coarse dust with a hair catcher 4, and removes it from the filtration tank 5.
Clean up pollutants in bath water. Next, in the sterilization tank 6, the bath water is sterilized by the ozone of the ozonizer 8 flowing from the ejector 7. The excess ozone is decomposed by the catalyst 9. Finally, the sterilized bath water is heated by the heater 10 and returns to the bath tub 2.

The filter tank 5 of the above-mentioned bath water circulation purification apparatus 1 is filled with a filter medium having a particle size of 5 to 10 mm, and the bath water inflow pipe connected to the lower portion of the filter tank 5 is compressed via an air inflow valve 11. An air inflow pipe 14 is attached. Filter tank 5
A three-way valve 12 is attached to the bath water outflow pipe connected to the upper part of the so as to allow drainage, and a plurality of ultrasonic oscillators 13 are installed on the outer wall of the filtration tank 5. The filtration tank 5
When the bath water inflow pipe connected to the lower part of the bath is attached tangentially to the outer periphery of the filtration tank 5, the stirring action in the filtration tank 5 of the bath water is great, and especially when washing the filter medium, the compressed air is filtered. Since it evenly spreads inside, it exerts a great aeration effect.

When cleaning the sticky pollutants adhering to the filter medium in the filter tank 5 in the bath water circulation purification apparatus 1 configured as described above, the three-way valve 12 is switched to the drain direction and the ultrasonic oscillator 13 is turned on. Operate the air inflow valve 11 to open the flow rate 3
Pressure is 0.8 to 2.5 kgf / c at 0 liter / min
Compressed air of m ² is flowed into the filtration tank 5. Of course, the three-way valve 12, the ultrasonic oscillator 13, and the air inflow valve 11 may be operated in conjunction with each other. The cleaning of the filter medium in the filter tank 5 is promoted by the synergistic effect of ultrasonic vibration generated by the ultrasonic oscillator 13 and aeration caused by the inflow of compressed air.

[0011]

As described above, the filter tank of the bath water circulation purifying apparatus according to the present invention applies ultrasonic vibration to the filter medium of the filter tank, and at the same time, the synergistic effect of the aeration by the compressed air removes the contaminants on the filter medium surface. Great peeling and discharging effect. Further, according to the present invention, since the compressed air inflow pipe is simply connected to the bath water inflow pipe in the lower part of the filtration tank, and complicated piping equipment such as backwashing is not required, the space of the entire device is small and the installation of the device is completed. The use effect is great for space-constrained ships.

[Brief description of drawings]

FIG. 1 is a flow diagram of a bath water circulation purification device according to the present invention.

[Explanation of symbols]

 1 bath water circulation purification device 2 bathtub 3 circulation pump 4 hair catcher 5 filtration tank 6 sterilization tank 7 ejector 8 ozonizer 9 catalyzer 10 heater 11 air inflow valve 12 three-way valve 13 ultrasonic oscillator 14 compressed air inflow pipe

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Claims (2)

[Claims] 1. A bath water circulation purification device in which bath water in a bathtub is connected through a circulation pump and a filtration tank in this order so as to pass through the pipe in an upflow direction. A switching three-way valve connected to the drain pipe is interposed between the filter tank and the drain tank, and in the filter tank of the bath water circulation purification device in which an ultrasonic oscillator is attached to the filter tank, the circulation pump and the A filtration tank of a bath water circulation purification device, characterized in that a means for introducing compressed air is provided in a pipe line between the filtration tank and the filtration tank. 2. The filtration tank of the bath water circulation purifying apparatus according to claim 1, wherein an air inflow valve and a compressed air inflow pipe are arranged in the pipe line as the compressed air introducing means so that the compressed air can be introduced. .