JPH07328346A - Bath water cleaning device - Google Patents

Abstract

PURPOSE:To realize the reverse cleaning for a filter medium in a filter means at a low cost. CONSTITUTION:A circulating line for connecting a suction inlet 6 with a pump and a discharge outlet 7 is provided to circulate bath water in a bathtub and clean the bath water by a filter means arranged in the circulating line. The suction inlet 6 and the discharge outlet 7 are formed in the bathtub and a valve is provided on the suction inlet 6. A valve 9 in a flow path between a pump 2 rotating forward and reverse and the discharge outlet 7, and opening and closing the suction inlet side of the pump 2 and a drain outlet 8 in compliance with the rotating direction of the pump 2 is provided. The reverse cleaning of the filter medium can be carried out, despite that only one valve is added and also that the addition of piping is minimized.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bath water purifying device which purifies bath water in a bath to enable long-term use of bath water.

[0002]

2. Description of the Related Art In recent years, there have been provided baths for home use that allow bathing for 24 hours. in this case,
The bath water in the bathtub can be used for a long period of time.
It must be purified regularly or periodically. For this reason, this type of bath is equipped with a bath water purifying device which sucks up bath water in the bathtub, filters it with a filtering means, and returns it to the bathtub. An example is shown in FIG. In the figure, reference numeral 1 is a body of the purifying device, and a pump 2 and a filter 4 are housed in the body 1 from which a suction port 6 and a discharge port 7 are drawn out. If the pump 2 is operated with 7 submerged in the bath, the bath water sucked from the suction port 6 is passed through the filter 4 and then from the discharge port 7 to the bath as shown by the solid arrow in the figure. return.

By the way, the filter medium in the filter 4 includes:
It is necessary to wash the filter media regularly because dirt in the bath water adheres to it, so it is very troublesome to take out the filter media and wash it. Therefore, it is considered that water (bath water) is caused to flow through the filter medium in the direction opposite to the normal time to wash away the dirt attached to the filter medium. Valve 6 in FIG.
0 and 70 are provided for this purpose, and when the valves 60 and 70 are switched, the bath water sucked from the suction port 6 is filtered by the filter 4 as shown by the broken line arrow in the figure.
And then discharged from the drainage port 8.

[0004]

However, when such a backwashing function is added, two valves 60 and 70 must be provided, and the pipe and drain port 8 connecting both valves 60 and 70 are required. Due to the arrangement of each member in the body 1, the piping leading to becomes inevitably long, and there is a problem in terms of cost.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a bath water purifying apparatus which can realize backwashing and washing of a filtering material in a filtering means at low cost. It is in.

[0006]

SUMMARY OF THE INVENTION The present invention, however, has a circulation path connecting a suction port, a pump and a discharge port to circulate bath water in a bath and to arrange the filtration means in the circulation path. In a bath water purifying apparatus for purifying bath water by means of a check valve is provided at the suction port and the discharge port of the discharge port arranged in the bathtub, and the filtering means includes a pump and a discharge port that can be rotated forward and backward. It is arranged in the flow path between
It is characterized in that it is provided with a valve that opens and closes the suction port side and the drain port of the pump according to the rotation direction of the pump.

[0007]

According to the present invention, the filter material can be backwashed even though the addition of one valve is sufficient and the addition of piping is minimized. At this time, use a drain port that also serves as an intake port for the air supplied to the discharge port, and use the valve as a valve to shut off between the suction port side and the drain port of the pump during normal rotation of the pump. If you use something that connects the mouth and the discharge port,
What discharges the bath water as a so-called jet jet can be reasonably constructed, and as a filtering means,
By using the one equipped with the stirring device that stirs the filter material as the pump reverses, it is possible to more reliably remove the attached dirt by backwashing the filter material.

[0008]

EXAMPLES The present invention will be described in detail below with reference to the illustrated embodiments. The bath water purifying apparatus of the illustrated example can be retrofitted to an existing bath and prevents the temperature of the hot water from decreasing. Sheath heater 3 with a small amount of heat (about 600 W)
The inside of the body 1 in which the suction port 6 and the discharge port 7 are led out from the bottom surface is divided into a pump chamber 12, a heater chamber 13, and a filtration chamber 14. The pump chamber 12 is provided with a pump 2 capable of rotating in the normal and reverse directions, the sheath chamber 3 is provided in the heater chamber 13, and the filtration chamber 1 is provided.
A filter 4 is arranged at 4. The filter 4 is filled with a ball-shaped fibrous filter material or a ceramic ball-shaped filter material, and a microorganism that decomposes and removes the source of dirt and odor is added to this filter material. Further, the filter 4 has a built-in stirring blade 16 which is rotationally driven by a motor 15 provided on the lid 11 of the container 1.

Further, in the container 1, a sub-pump 5, a valve 9, a pressure sensor 10 and an electrolytic sterilizer 19 are further provided.
And are arranged. The sub-pump 5 is a self-priming type, and the sub-flow passage 6 is provided in the suction port 6 equipped with a check valve (not shown).
1 and the pump chamber 1 in the body 1
The check valve 51 is connected to a portion between the heater 2 and the heater chamber 13. The valve 9 is of an electromagnetic type and is used in the pump chamber 1
In addition to controlling the communication state between the suction port side of 2 and the drain port 8, the jet port 7 of the jet jet type is also used.
The air flow path 71 between the discharge port 8 and the drain port 8 which also serves as an intake port for the air sent to the discharge port 7 is also controlled. The pressure sensor 10 arranged in the heater chamber 13 detects clogging of the filter 4 by detecting the internal pressure in the heater chamber 12. The electrolytic sterilizer 19 is arranged in the flow path from the filtration chamber 14 to the discharge port 7.

In this bath water purifying apparatus, however, the suction port 6 and the discharge port 7 are installed near the bathtub.
Is submerged in the bath water in the bathtub, and at the time of the first operation, the self-priming sub-pump 5 is activated to operate the pump chamber 1
Fill 2 with bath water. After that, as shown in FIG.
The bath water sucked from the suction port 6 by the normal rotation of the pump 2 is sent to the filtration chamber 14 via the heater chamber 13, is purified by the filter 4 and sterilized by the electrolytic sterilization device 19, and then is discharged by the discharge port 7.
Back into the bathtub. At this time, if the valve 9 opens the air flow path 71 between the drain port 8 and the discharge port 7, the air is sucked from the drain port 8 due to the pressure drop caused by the discharge of the bath water from the discharge port 7. It is ejected simultaneously from the ejection port 7. When the sheath heater 3 is energized, the temperature drop of the bath water is prevented. Since the suction port 6 is provided with a filter, hair and the like are caught here.

When the filter material of the filter 4 is clogged and the flow becomes poor, the pressure in the heater chamber 13 between the pump 2 and the filter 4 rises.
0 is detected and this is notified, or the backwash operation is started. This backwashing operation is performed by switching the valve 9 and reversing the rotation direction of the pump 2. That is, the valve 9 brings the drainage port 8 and the pump chamber 12 into communication with each other, and the pump 2 is operated in the reverse direction. At this time, as shown in FIG. 4 flows from the heater chamber 13 into the pump chamber 12 in the direction opposite to the normal direction, and since the suction port 6 has a check valve, it is drained to the drain port 8 side. At this time, by rotating the stirring blade 16 with the motor 15, the waste material attached to the filter material is efficiently washed away because the filter material in the filter 4 is stirred.

[0012]

As described above, in the present invention, a pump that can be rotated forward and backward is used, and a valve for opening and closing the suction port side with a check valve of the pump and the drain port according to the rotation direction of the pump. Since the filter is provided, the water flow for backwashing the filter medium can be performed by adding only one valve, and the piping for connection between the suction port side of the pump and the drain port is connected to the inside of the body. Since it is easy to make the shortest ones that connect the adjacent ones in the arrangement, it is possible to backwash the filter medium at low cost.

Further, the intake port for the air supplied to the discharge port is also used as the drain port, and further, the valve serves as a valve to shut off the suction port side and the drain port of the pump at the time of normal rotation of the pump. When using the one that communicates with the discharge port, it is possible to reasonably configure what discharges the bath water as a so-called jet jet flow.

When using, as the filtering means, a device equipped with a stirring device for stirring the filter medium as the pump reverses,
It becomes possible to more reliably remove the dirt attached to the filter material.

[Brief description of drawings]

FIG. 1 is a schematic sectional view of an embodiment of the present invention.

FIG. 2 is an explanatory diagram of the same purifying operation as above.

FIG. 3 is an explanatory diagram of the above backwash operation.

FIG. 4 is an explanatory diagram of a conventional example.

[Explanation of symbols]

 1 Body 2 Pump 4 Filter 6 Suction port 7 Discharge port 8 Drain port 9 Valve

Claims (3)

[Claims] 1. A bath water purifier that has a circulation path connecting a suction port, a pump and a discharge port, circulates the bath water in the bathtub, and purifies the bath water by a filtering means arranged in the circulation path. In the device, a check valve is provided at the suction port of the suction port and the discharge port of the discharge port, and the filtering means is disposed in the flow path between the forward and reverse rotatable pump and the discharge port. An apparatus for purifying bath water, comprising a valve that opens and closes the suction port side and the drain port of the pump according to the rotation direction of the pump. 2. The drainage port also serves as an intake port for air supplied to the discharge port, and the valve shuts off between the suction port side of the pump and the drainage port during normal rotation of the pump. The bath water purifying apparatus according to claim 1, wherein the drain port and the discharge port are communicated with each other. 3. The bath water purifying apparatus according to claim 1, wherein the filtering means includes a stirring device that stirs the filter material as the pump reverses.