JPH07328348A - Bath water cleaning device - Google Patents

Abstract

PURPOSE:To use a pump which is not a self-priming pump without forming any problem by setting a self-priming sub-pump filling water inside a pump chamber for a pump for circulating bath water. CONSTITUTION:A sub-pump 5 is of a self-priming type and is connected Ma suction inlet 6 provided with a check valve through a sub-flow path 61 and also connected to a section between a pump chamber 12 in a device 1 and a heater chamber 13 through a check valve 51. At the time of first operation, the self-priming sub-pump 5 is actuated to fill bath water in the pump chamber 12. As the check valve is set on the suction inlet 6, water in the pump chamber 12 is not discharged out of the suction inlet 6. Also as the check valve 51 is set between the sub-pump 5 and the pump chamber 12, water is not flowed to the sub-pump 5 side during the normal operation. At least the inside of the pump chamber 12 in the device 1 is filled with water, and then the pump 2 is rotated forward. The pump for circulating the bath water, therefore, is not required to be of a self-priming type.

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, and the suction port 6 and the discharge port are shown. When the pump 2 is operated in a state in which 7 is submerged in the bathtub, the bath water sucked from the suction port 6 is passed through the filter 4 and then from the discharge port 7 to the bathtub as shown by a 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.

[0004]

In this case, if the pump 2 that can be rotated forward and backward is used, the mechanism for backwashing becomes simple. However, such a pump, that is, a pump that is not a self-priming pump, is used. When using the
Since the user has to fill the pump chamber with water, the burden on the user is increased, and the pump may be operated without damaging the pump chamber and water may be damaged. is there.

The present invention has been made in view of the above points, and an object of the present invention is to provide a bath water purifying apparatus which can use a pump which is not a self-priming type without causing any problems.

[0006]

DISCLOSURE OF THE INVENTION In the bath water purifying device of the present invention, however, the bath water is circulated in the bath water purifying apparatus for sucking the bath water in the bathtub and filtering it by the filtering means and then returning it to the bathtub. It is characterized by the fact that it is equipped with a self-priming sub-pump for filling the bath with bath water.

[0007]

According to the present invention, since the pump chamber can be filled with water by the sub-pump, the pump type does not matter. Therefore, it is possible to easily deal with backwashing of the filtering means at the time of reverse rotation by using a pump that can be rotated normally and reversely.

[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. Since the suction port 6 has the check valve as described above, the water in the pump chamber 12 never flows out from the suction port 6. Further, since the check valve 51 is also provided between the sub pump 5 and the pump chamber 12, water does not flow to the sub pump 5 side during normal operation.

At least the pump chamber 12 in the body 1
After filling the inside with water, the pump 2 is normally rotated. As shown in FIG. 2, the bath water sucked from the suction port 6 by the pump 2 is sent to the filtration chamber 14 via the heater chamber 13, and after being purified by the filter 4 and sterilized by the electrolytic sterilizer 19, discharged from the discharge port 7. Put it back in 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 discharged from the discharge port 7 at the same time. 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.

[0013]

As described above, in the present invention, since the pump chamber for circulating the bath water is provided with the self-priming sub-pump for filling the bath water with the bath water, the pump needs to be self-priming. Instead, it is possible to use a type more suitable for circulating the bath water, and it is also easy to use a type that can be rotated normally and reversely so that the filtration means is backwashed during reverse rotation. Is something that can be done.

[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]

 2 pumps 4 filter 5 sub pump 12 pump room

Claims (2)

[Claims] 1. A self-priming sub-pump in which a pump chamber of a pump for circulating bath water is filled with bath water in a bath water purifying apparatus which sucks up bath water in the bathtub and filters it by a filtering means and then returns it to the bathtub. A bath water purifier characterized by comprising: 2. The bath water purifying apparatus according to claim 1, wherein the pump is capable of freely rotating in the normal and reverse directions, and performs backwashing of the filtering means at the time of reverse rotation.