JP3256985B2 - Bathtub water purification equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bath tub water circulation purifying apparatus utilizing a biofilm.

[0002]

2. Description of the Related Art Conventionally, there is a purification method in which a bathtub and a purifier are connected by a circulation pipe to circulate the bathtub water and to purify the bathtub water in the middle of a circulation path.

[0003] The above-mentioned purifier is configured to purify water using barley stone or the like as a biofilm filter, but at the same time, removes suspended components contained in bath water. May be used. Therefore, as a form of purification, there are a case where the dirty water in the bathtub is directly passed through the biofilm filter, and a case where the primary filtration is performed through a filter such as a single fiber and then the biofilm filter is passed.

[0004]

However, when sewage is directly passed through a biofilm filter, sufficient purification cannot be performed because suspended components in the bathtub are not removed. There is a possibility that the load on the filter increases and the life of the filter is shortened.

[0005] Therefore, generally, such a drawback is eliminated by performing primary filtration using a fibrous filter in advance. However, maintenance work for periodically replacing the fibrous filter is required, which is complicated.

[0006]

SUMMARY OF THE INVENTION The present invention relates to a bath tub water purification apparatus in which a base end and a front end of a circulation pipe are connected to a bathtub body, and a circulation pump and a purifier are connected in the middle of the circulation pipe. A primary filtration unit for the primary filtration and a secondary filtration unit are sequentially interposed between the primary filtration unit and the circulation pipe located upstream and downstream of the primary filtration unit. The proximal end and the distal end of the pipe are connected via first and second switching valves, respectively, and the proximal end of the drainage pipe is connected to the portion of the circulation pipe located between the first switching valve and the primary filtration unit. 3 through a switching valve, and further, a flow rate sensor is mounted in the middle of the circulation pipe, and a pressure sensor is mounted between the base end of the circulation pipe and the circulation pump. Switching operation of the first, second, and third switching valves Controlling the those of the bathtub water purifying device according to claim.

For this purpose, the first, second, and third valves each use an electric three-way valve, and a control unit for electrically controlling these valves is provided.

[0008]

According to the present invention, when purifying ordinary bath water, the circulation pump is operated to circulate the bath water between the bath and the purifier.

[0009] In the purifier, first, suspended components in the bath are filtered by a primary filtration unit using a filter medium such as glass beads, and then purified by a secondary filtration unit using a biofilm filter. It recirculates in the bathtub.

When the suspended components accumulate in the primary filtration section after a certain period of use, the first, second and third switching valves provided on the upstream and downstream sides of the same section filtration section are switched. By operating, the backwash pipe and the drain pipe are communicated to form a backwash flow path, and bathtub water flows from the reverse direction to the primary filtration unit through the backwash flow path to wash glass beads, so-called washing. Backwashing is performed, and the bath water that is contaminated by backwashing is discharged from the drainage pipe to the outside of the circulation pipe. Since the primary filtration unit can be easily washed through the backwash channel as described above, maintenance such as replacement of the filter is not required, and the life of the biofilm filter of the secondary filtration unit is extended.

In this case, the first, second, and third switching valves use electric three-way valves, and the switching operation of each valve can be easily and reliably performed by the operation panel unit via the control unit.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a conceptual explanatory view of a bath water circulation / purification apparatus A utilizing a biofilm according to the present invention.

The bath tub water circulation / purification apparatus A is constructed by connecting a bath tub body 1 and a purifier 2 with a circulation pipe 3, and a circulation pump P is provided in the middle of the circulation pipe 3. w is a bath water as bath water.

The circulation pipe 3 is provided between the bath water suction port 4 provided in the bathtub body 1 and the suction port of the circulation pump P, the discharge port of the circulation pump P and the bathtub 1. A circulating pump P sucks the bath water w in the bathtub 1 from the bath water suction port 4 through the suction pipe 5 and forms a strong feed pipe. A blow operation in which the bath water w is blown out from the bath water spray nozzle 6 into the bath tub 1 through 7 is enabled.

The purifier 2 includes a primary filtration filter section 8 as a primary filtration section for removing suspended components using a filter medium such as glass beads, and a bath water w filtered by the filter section 8.
And a biofilm filter unit 9 as a secondary filtration unit for purifying by performing biological purification treatment with barley stone. Both of the filter units 8 and 9 are each provided with a primary filtration filter in the middle of the high-feed pipe 7. The part 8 is mounted so that it is located on the upstream side.

The strong feed pipe 7 has a primary filter section 8
The upstream and downstream sides of the backwash pipe 10 are connected to the base end and the distal end thereof via first and second switching valves 11 and 12, respectively. Further, the first switching valve 11 and the primary filtration filter unit 8 are connected to each other. The base end of the drainage pipe 13 is connected via a third switching valve 14.

The first, second, and third switching valves 11, 1
By switching 2,14 so that the filtration flow paths in the a direction, b direction, and c direction shown in FIG. 1 are respectively formed,
After the bath water is passed through the primary filtration filter section 8 to be filtered and further passed through the biofilm filter section 9 to be purified, the bath water can be jetted from the bath water jet nozzle 6.

The first, second, and third switching valves 11, 12,
14 is switched so as to form backwash channels in the d, e, and f directions, respectively, so that the bath water flows through the backwash pipe 10 into the primary filtration filter unit 8 in a direction opposite to the filtration direction. To wash the glass beads and the like in the filter section 8, and the washing wastewater can be discharged through a drainage pipe 13.

The first, second, and third switching valves 11, 12, and 14 are
Each uses an electric three-way valve, and each valve 11, 12,
14 and the drive motor M of the circulation pump P are connected to the output side of the control unit 15.

On the input side of the control section 15, an operation panel section 16 disposed near the bathtub 1, a pressure sensor 17 attached to the suction pipe 5, and a high-pressure pipe 7 at a position upstream of the primary filtration filter section. The attached flow sensor 18 is connected.

In this manner, the bath tub water circulation purification device A
By operating the operation panel unit 16, the bath pump w can be filtered and further purified by the purifier 2 while performing the blow operation by driving the circulation pump P via the control unit 15. I have.

Then, when the control unit 15 inputs a decrease in the flow rate of the bath water forcibly fed through the strong feed pipe 7 based on the detection output of the flow sensor 18, the control unit 15 reads the detection output of the pressure sensor 17, Based on the output value, it is determined whether the cause of the flow rate decrease is due to the suction filter provided in the bath water suction port 4 or to the primary filtration filter unit 8.

That is, if there is almost no change in the pressure value detected by the pressure sensor 17, the control unit 15 determines that the primary filtration filter unit 8 is clogged, and performs the first, second, and second operations. 3 The switching valves 11, 12, and 14 are respectively operated in the direction in which the backwash flow path is formed, so that the filter unit 8 is washed for a certain period of time, and then the valves 11, 12, and 14 are restored to their original states. Thus, a filtration channel is formed.

When the negative pressure of the pressure value detected by the pressure sensor 17 is high, the control unit 15 determines that the suction filter provided in the bath hot water suction port 4 is clogged. An alarm to the effect is issued by an alarm unit 19 provided on the operation panel unit 16,
The user can be visually and audibly recognized.

The position at which the flow rate sensor 18 is mounted is not limited to the location upstream of the filter section of the high-power pipe 7 but may be set at the position of the circulation pipe 3.
May be anywhere.

[0027]

According to the present invention, the bath water is circulated and purified between the bathtub and the purifier by the circulation pump.
The purification device includes a primary filtration unit for primary filtration using a filter medium such as a glass bead, and a secondary filtration unit, and a first filtration unit is provided in the middle of a circulation pipe on the upstream and downstream sides of the primary filtration unit.・
A second switching valve is provided, and a backwash flow path is formed through which the bath water flows into the primary filtration unit from the opposite direction via the two changeover valves, and a rear end of the backwash flow path is provided via a third changeover valve. By communicating with the drain pipe, the primary filtration unit can be easily washed by backwashing the bath water without the need to replace the primary filtration unit, and the load on the biofilm filter of the secondary filtration unit can be reduced. In addition, the durability can be reduced, and the backwash operation itself can be performed simply by switching the switching valve, so that the filter can be easily cleaned.

In addition, the switching valve can be automatically switched by the control unit based on the detection results of the flow rate sensor and the pressure sensor, so that the purifier can be automatically cleaned.

[Brief description of the drawings]

FIG. 1 is a conceptual explanatory view of a bath tub water circulation purification device using a biofilm according to the present invention.

[Explanation of symbols]

 Reference Signs List A Bath water purifier 1 Bath tub body 2 Purifier 3 Circulation pipe P Circulation pump 4 Bath hot water inlet 5 Suction pipe 6 Bath hot water jet nozzle 7 Strong feed pipe 8 Primary filtration filter section 9 Biofilm filter section

──────────────────────────────────────────────────続 き Continuation of the front page (51) Int.Cl. ⁷ Identification symbol FIF24H 9/00 B01D 35/02 J (56) References JP-A-4-150816 (JP, A) JP-A-4-322709 ( JP, A) JP-A-4-3499992 (JP, A) JP-A-3-30890 (JP, A) JP-A-63-190415 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , (DB name) A47K 3/00 B01D 24/46 B01D 35/027 C02F 1/28

Claims (1)

(57) [Claims] 1. A bathtub water purifier having a base and a tip of a circulation pipe connected to a bathtub body and a circulation pump and a purifier connected in the middle of the circulation pipe, wherein the purifier is a primary filter for primary filtration. The filtration unit and the secondary filtration unit are sequentially interposed and configured, and furthermore, the base end and the tip of the backwashing pipe are provided in the part of the circulation pipe located on the upstream side and the downstream side of the primary filtration unit. The drain pipe is connected via a third switching valve to a portion of the circulation pipe located between the first switching valve and the primary filtration unit, while being connected via the first and second switching valves. Inside the circulation pipe
At the same time, attach a flow sensor and
Install a pressure sensor between the
The first, second, and third switching valves based on a detection result;
A bathtub water purification apparatus characterized by controlling a switching operation of a bathtub.