JP3114552B2 - Water purification device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to bath water, pool water,
The present invention relates to a commercial or household water purification device for purifying and sterilizing water such as aquaculture water.

[0002]

2. Description of the Related Art Conventionally, this type of water purifying apparatus has been as shown in FIG. In the system for filtering the water to be treated 1 by the filter 2, the water to be treated 1 is
The treated water filtered by the filter 2 is sent to the filter 2 through the multi-way valve 4 and the feed pipe 5, and the filtered water 6 and the multi-way valve 4
Is returned to the water 1 to be treated. In this conventional example,
Before the filtration operation, the multi-way valve 4 is operated to connect the drainage pipe 6 and the discharge pipe 7. Next, the flocculant 8 is sucked by the circulation pump 3 through the valve 9 on-off valve 10 and sent to the filter 2. Also, the hydrogen ion regulator 11 is sucked by the circulation pump 3 via the valve 12 opening / closing valve 13 and sent to the filter 2. By this operation, the filter 2
A colloidal floc is formed in the medium and the filtration operation is performed (for example, JP-A-1-242117).

[0003]

However, in the above configuration, the filtration performance is improved by forming a colloidal floc in the filter 2, but when the filter 2 is used for a long period of time, the filter 2 will be in the filter 2. A lot of flock and dirt in the water to be purified are deposited. As a result, the pressure loss of the filter 2 increases, and the circulation flow rate decreases.
And the filtration performance deteriorates.

Further, in the conventional example, the coagulant is provided separately from the filtration circulation circuit and the coagulant is supplied. Therefore, there is a problem that the space for installing the coagulant is wide, the supply of the coagulant is troublesome, and the usability is poor. Was.

[0005] Therefore, the present invention requires less space for equipment installation.
Another object of the present invention is to provide a water purification device having high performance even when used for a long period of time.

It is a second object of the present invention to provide a water purifier for purifying hot water in a bathtub in a short time even after using the purifier for a long time.

It is a third object of the present invention to provide a water purifying apparatus which always improves the purification performance when bathing in a bathtub and keeps clean water with low turbidity even during bathing.

[0008]

SUMMARY OF THE INVENTION In order to achieve the first object, the present invention provides filtering means for filtering contaminated substances of water to be purified , cleaning means for the filtering means, and a filter provided inside the filtering means.
It is a cohesive unit to aggregate the soiling material of the purified water, washing hands
And a controller for operating the aggregating means after operating the step .

In order to achieve the second object, the present invention provides a bathtub, a circulating pump for circulating the bathtub water,
A circulation circuit piped between the circulation pump and the bathtub, a filtration unit provided in the circulation circuit, a washing unit of the filtration unit, and a drainage unit that drains the washing wastewater washed by the washing unit; Aggregating means provided inside the filtering means for aggregating the contaminants of the bathtub water, heating means for heating the bathwater in the bathtub, and after operating the washing means, hot water is supplied by the circulation pump to the bathtub. And the filtration means
And a control unit for operating the aggregating means while circulating through the gap.

In order to achieve the third object, the present invention provides a bathtub, a circulating pump for circulating the bathtub water,
The circulation pump and a circulation circuit piping between said tub, a filtering means provided in the circulation circuit, said filtration hand
A coagulation agent provided inside the step for coagulating the dirt material of the bathtub water.
Collecting means, bathing detecting means for detecting bathing in the bathtub, heating means for heating bathtub water in the bathtub, hot water by the circulation pump by the signal of the bathing detecting means, and the bathtub.
A control unit for operating the aggregating unit while circulating between the filtering units.

[0011]

According to the present invention, after the filtration operation is performed, the filtration means is washed and the dirt is discharged after the filtration operation, and the coagulation operation is performed thereafter.

Further, according to the present invention, after the bath water is filtered, the contaminated soil is discharged at regular time intervals, and thereafter the flocculation operation is carried out for a fixed time.

According to the present invention, coagulation is performed by a coagulation means provided in a filtration circuit to purify hot water in a bathtub.

Further, in the present invention, high-performance coagulation filtration is always performed during bathing by controlling the coagulation means with a signal from the bathing detection means.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment corresponding to the first and second inventions will be described below with reference to the accompanying drawings. 1 to 3, reference numeral 14 denotes a bathtub, and the bathtub 14 and the circulation pump 1
5, a circulation circuit is formed by piping with a going pipe 16 and a returning pipe 17. The outgoing pipe 16 is provided with a filtration tank 18 of filtration means. A granular filter medium 19 is provided inside the filter tank 18.
And a filter bed 20 for supporting the particulate filter medium 19, and a stainless steel electrode 21 and an aluminum electrode 22 constituting the aggregating means, and an ultraviolet lamp 23 as a sterilizing means are provided on the upper part. The outgoing pipe 15 of the circulation pump 15 is branched via a three-way valve 24 into an outgoing pipe to the upper part of the filter tank 18 and a washing pipe 25 to the lower part of the filter tank 18. Discharge means 28 is provided from the upper part of the filtration tank 18 by a valve 26 and a discharge pipe 27. Further, the washing pipe 25 and the discharging means 2
Reference numeral 8 denotes a cleaning means. On the other hand, an opening / closing valve 29, a flow rate switch 30, and an electric heater 31 as a heating means are provided in the outgoing pipe 16 from the lower part of the filtration tank 18 to the bathtub 14. Numeral 32 denotes a heat source having an electric heater 33. From this heat source 32, check valves 34, 35, 3
6, a hot water supply pipe 39 is provided via a vacuum break valve 37 and a flow control valve 38. Reference numeral 40 denotes a water supply pipe provided via a check valve 41 and a flow control valve 42. Reference numeral 43 denotes an arrow indicating the flow of the fluid, and reference numeral 44 denotes flocculated flocs deposited on the particulate filter medium 19. A control unit 81 operates the aggregating unit and the cleaning unit.

FIG. 4 is a flowchart showing the operating state.
In other words, after the filling operation 46 to the bathtub is performed from the stop state 45, the coagulation operation 47 and the filtration operation 48 are started. Thereafter, at the time of bathing, an automatic warming operation 49, an automatic hot water operation 50, a high-temperature hot water operation 51 and the like are performed, and then a washing operation 52 of the filtration tank is performed.

Next, the operation of the present invention will be described. FIG.
The filtering operation 48 will be described with reference to FIG. When the circulation pump 15 operates during the filtration operation, the water in the bathtub 14 is drawn into the circulation pump 15 from the return pipe 17 and then flows to the filtration tank 18 via the three-way valve 24. The hot water flowing into the filtration tank 18 is filtered by the flocculated floc 44 and the particulate filter medium 19 and
Circulated to 4. In this way, the hot water in the bathtub 14 is purified. In this cleaning operation, the cleaning is performed during the automatic warming operation 49, the automatic hot water operation 50, and the high-temperature hot water operation 51. After a lapse of a certain time thereafter, the washing operation 52 of the filtration tank 18 is performed.
Is performed.

Next, a washing operation 52 of the filtration layer 18 will be described with reference to FIGS. When the circulation pump 15 is operated during the washing operation, the water in the bathtub 14 is sucked into the circulation pump 15 from the return pipe 17 and then from the lower part of the filtration layer 18 through the three-way valve 24 and the washing pipe 25. Flows to Filtration tank 1
The water flowing to 8 lifts and cleans the particulate filter medium 19. At this time, the dirt in the bathtub 14 deposited on the particulate filter medium 19 during the filtration operation is discharged from the discharge pipe 27 via the valve 26.
At this time, the cleaning operation time is set by a timer (not shown). When the cleaning operation of the filtration tank 18 is completed, the coagulation operation is immediately performed according to a command from the control unit 81.

Next, the coagulation operation 47 will be described with reference to FIGS. When the circulation pump 15 is operated during the coagulation operation, the water in the bathtub 14 is sucked into the circulation pump 15 from the return pipe 17 and then flows from the upper part of the filtration tank 18 to the filtration tank 18 via the three-way valve 24. By applying a DC voltage to the stainless steel electrode 21 and the aluminum electrode 22, the aluminum hydroxide 53, which is a coagulant, is eluted from the aluminum electrode 22, which is a positive electrode, into the filtration tank 18, and becomes coagulated flocs 44 to form the particulate filter agent 19. Deposits on top of In such a state, as a result of the flocculated flocs 44 making the gap between the particulate filter agents 19 small, fine dirt in the bathtub 14 can be filtered and extremely high-performance filtration performance can be obtained. When the coagulation operation 47 is completed, the filtration operation 48
And the filtration operation 48 is continued.

During the filtration operation, the electric heater 31 is turned on and off in conjunction with the flow rate switch 30 and a thermistor (not shown) for detecting the temperature of the circulating hot water, so as to keep the hot water temperature in the bathtub 14 constant. .

Next, a second embodiment will be described with reference to FIGS. The components in FIG. 5 are the same as those in FIG. 1, and the components in FIG. 6 are the same as those in FIG. FIG. 7 is a flowchart illustrating the operation state.
From the stopped state 53 of the device, after the hot water filling operation 54 for the bathtub is performed, the coagulation operation 55 and the filtration operation 56 are started. Thereafter, at the time of bathing, the automatic warming operation 57, the automatic hot water operation 5
8. A high-temperature hot water supply operation 59 is performed, and then a washing operation 60 of the filtration tank is performed.

This operation is in a mode in which the automatic warming can be maintained for 4 hours after the hot water filling operation. A control unit 82 operates the cleaning unit.

Next, the operation will be described. 5 and FIG. 7, a filling operation 54 for supplying hot water to the bathtub 14 will be described. At the time of hot water filling, hot water is supplied from the heat source 32 and water is supplied from the water supply pipe 40.
Supplied to. The hot water supplied at this time is returned to the return pipe 17,
It is supplied through two pipes of the washing pipe 25. Bathtub 14
When a certain amount of hot water is supplied to the return pipe 17, a water level sensor (not shown) provided in the return pipe 17 detects the water level and stops the supply. When the supply to the bathtub 14 is completed, air is in the filtration tank 18. The following operation is performed to discharge this air. 5, the valve 26 is opened and the on-off valve 29 is opened.
To close. Next, when the circulation pump 15 is operated, the bathtub 14 is started.
Hot water is sucked by the circulation pump 15 and supplied into the filtration tank 18 from the lower part of the filtration tank 18. At this time, the air in the filtration tank 18 is discharged from the valve 26 to the outside. The circulation pump 15 is operated for a predetermined time by a timer and stopped. When the air discharge operation is completed, the coagulation operation 55 is performed according to a command from the control unit.

Next, the coagulation operation 55 will be described with reference to FIGS. When the circulation pump 15 is operated during the coagulation operation, the water in the bathtub 14 is returned from the return pipe 17 to the circulation pump 15.
After flowing into the filter tank 18 from the upper part of the filter tank 18 through the three-way valve 24, a DC voltage is applied to the stainless steel electrode 21 and the aluminum electrode 22 at this time, so that the aluminum electrode 22 as a positive electrode From the aluminum hydroxide 53 of the coagulant is eluted into the filtration tank 18,
The aggregated floc 44 is deposited on the particulate filter agent 19. In such a state, the flocculated flocs 44 reduce the gap between the particulate filter agents 19. When the coagulation operation 55 ends, the operation is switched to the filtration operation 56, and the filtration operation 56 is started.

Next, a third embodiment will be described with reference to FIGS.
It will be described based on the following. In FIG. 8, the return pipe 17 is provided with a turbidity sensor 61 for detecting the turbidity of the bathtub 14. A control unit 83 operates the aggregating unit. Other components are the same as those in FIG. 3 and the description is omitted. A flowchart showing the operating state will be described with reference to FIG. After the hot water filling operation 63 to the bathtub 14 is performed from the stop state 62 of the device, the filtering operation 64 is started. Thereafter, at the time of bathing, the turbidity sensor 61 periodically detects the turbidity of the circulating water.
6 is performed for a fixed time. After the coagulation operation 66 is performed, the filtration operation is also performed. During that time, the automatic warming operation 67, the automatic hot water operation 68, and the high-temperature hot water operation 69 are performed, and then the washing operation 70 of the filtration tank is performed. As described above, in the present configuration, the turbidity of the bathtub 14 is detected during the filtration operation 64, and the coagulation operation 66 is performed at a certain turbidity. During the filtering operation, the electric heater 31 is turned on and off in conjunction with the flow rate switch 30 and a thermistor (not shown) for detecting the temperature of the circulating hot water, so that the hot water temperature in the bathtub 14 is kept constant.

Next, a fourth embodiment will be described with reference to FIGS. Referring to FIG.
Is provided with a water level sensor 71 which is a bathing detecting means for detecting a change in the water level of the bathtub 14. A control unit 84 operates the aggregating unit. Other components are the same as those in FIG. 3 and the description is omitted. A flowchart showing the operating state will be described with reference to FIG. 11. After the hot water filling operation 73 for the bathtub 14 is performed from the equipment stop state 72, the filtering operation 74 is performed.
Is started. Thereafter, at the time of bathing, the water level sensor 71 periodically detects the water level 75 of the bathtub 14, and when the change in the water level becomes higher than a set value, the coagulation operation 76 is performed for a predetermined time by a command from the control unit 84. In the present embodiment, the agglomeration operation is performed by judging that a sudden change in the water level has taken place in the bathtub. After the coagulation operation, the filtration operation is still performed, during which the automatic warming operation 77 and the automatic hot water operation 7
8. A high-temperature hot water supply operation 79 is performed, and then a washing operation 80 of the filtration tank is performed. Thus, in this embodiment,
The water level in the bathtub 14 is detected during the filtration operation 74, and the coagulation operation 76 is performed when the water level changes by a certain level. During the filtration operation, the electric heater 3 works in conjunction with the flow rate switch 30 and a thermistor (not shown) for detecting the temperature of the circulating hot water.
1 turns on and off to keep the temperature of the hot water in the bathtub 14 constant.

[0027]

As is apparent from the above description, the following effects can be obtained according to the water purification apparatus of the present invention.

According to the first aspect of the present invention, since the flocculating operation is performed after the filtering means is washed, a new flocculated floc can always be formed and purified, so that the dirt in the water to be purified is fixed. Therefore, high purification performance can be maintained even during long-term use.

According to the second aspect of the present invention, the filtering means is washed at regular intervals, and thereafter, a coagulation operation is performed, so that only a fixed amount of dirt accumulates inside the filtration tank. Can be maintained. In addition, the temperature of the bathtub can be kept constant.

[0030] According to the third aspect of the present invention, the bath detecting hand is provided.
By controlling the coagulation means with the signal of the step, the bath at the time of bathing
Dirt in the tank can be reduced.

According to the invention described in the above claims,
By providing the aggregating means in the circulation circuit and performing the aggregating operation before the filtering operation after filling the hot water, it is possible to realize a small and compact bathtub purifying apparatus having excellent purification performance.

[Brief description of the drawings]

FIG. 1 is a configuration diagram illustrating a filtration operation state of a water purification device according to a first embodiment of the present invention.

FIG. 2 is a configuration diagram illustrating a cleaning operation state of the apparatus.

FIG. 3 is a configuration diagram illustrating a coagulation operation state of the apparatus.

FIG. 4 is an operation flowchart of the apparatus.

FIG. 5 is a configuration diagram illustrating a hot water filling operation state of the water purification device according to the second embodiment of the present invention.

FIG. 6 is a configuration diagram illustrating a coagulation operation state of the apparatus.

FIG. 7 is an operation flowchart of the apparatus.

FIG. 8 is a configuration diagram illustrating a coagulation operation state of a water purification device according to a third embodiment of the present invention.

FIG. 9 is an operation flowchart of the apparatus.

FIG. 10 is a configuration diagram of a coagulation operation system of a water purification device according to a fourth embodiment of the present invention.

FIG. 11 is an operation flowchart of the apparatus.

FIG. 12 is a configuration diagram illustrating a state of a conventional water purification device.

[Explanation of symbols]

 18 Filtration Means 21 Aggregation Means (Stainless Electrode) 22 Aggregation Means (Aluminum Electrode) 25 Cleaning Means (Cleaning Tube) 28 Cleaning Means (Discharge Means) 81 Control Unit

────────────────────────────────────────────────── ─── Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI C02F 9/00 502 C02F 9/00 502D 502P 503Z 503 504B 504 E03B 1/04 E03B 1/04 B01D 35/02 J (72) Invention Person Satoshi Furuta 1006 Kazuma Kadoma, Kazuma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) References JP-A-7-299443 (JP, A) JP-A-7-308527 (JP, A) JP-A 7- 308679 (JP, A) JP-A-1-242117 (JP, A) JP-A-2-105450 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) C02F 1/52 B01D 21 / 00 B01D 35/027

Claims (3)

(57) [Claims] 1. A filtering means for filtering a contaminated substance of water to be purified, a washing means for said filtering means, and an inside of said filtering means.
A water purification apparatus, comprising: an aggregating unit provided for aggregating a contaminated substance of water to be purified; and a control unit for operating the aggregating unit after operating the cleaning unit. 2. A bathtub, a circulating pump for circulating the bathtub water, a circulating circuit arranged between the circulating pump and the bathtub, a filtering means provided in the circulating circuit, and a cleaning of the filtering means. Means, drainage means for draining the washing sewage washed by the washing means, aggregating means provided inside the filtering means for aggregating the dirt substances of the tub water, and tub water in the tub. After operating the heating means for heating and the washing means, the circulation pump removes hot water from the bathtub and the filtration means.
A control unit for operating the aggregating means while circulating between the stages . 3. A bath, a circulation pump for circulating the bathtub water, the circulation pump and a circulation circuit piping between said tub, a filtering means provided in the circulation circuit, said filtration
Aggregating the dirt material of the bath water provided inside the means
Aggregating means, bathing detecting means for detecting bathing in the bathtub, heating means for heating bathtub water in the bathtub, hot water by the circulating pump by the signal of the bathing detecting means,
A water purification device comprising: a control unit that operates the aggregating unit while circulating between the filtering units.