JPH08103609A - Bath water circulating and purifying device - Google Patents

Abstract

PURPOSE: To surely execute washing of filter media by backflow of bath water by partitioning the inside of a filter case by partition plates to a plurality in a vertical direction, housing filter mediate respectively in the upper parts of these partition plates and providing the partition plates with water ejection ports for ejecting bath water at the time of back washing in approximately the central parts thereof. CONSTITUTION: A control circuit 25 changes over first and second three-way valves 13, 14 at prescribed constant time intervals to pass the bath water lifted by a circulating pump 4 through a bypass path 12 - the filter case 8 - a drain water 15 and back flows the bath water 3 for the prescribed period of time into the filter case 8, thereby washing the filter media 16. At this time, the bath water 3 is ejected through the ejection ports 20 from the bypass passage 12 and agitates the filter media 16 of a lower stage; thereafter, the bath water is ejected out of the ejection ports 19 of the partition plates 17 and agitates the filter media 16 of the upper stage; thereafter, the bath water is discharged outside from a drain path 15 out through a second three- way valve 14 from an inflow port 24. Then, the filter media are efficiently and surely agitated by the circulating capacity of the bath water by the circulating pump at the time of back washing, by which the filtration capacity is restored.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bath water circulation purification device for circulating water in a bathtub in a circulation passage by a circulation pump and filtering and purifying it by a filter mounted in the circulation passage.

[0002]

2. Description of the Related Art As a device for purifying bath water in a domestic bathtub, which can be used for a long period of time, as shown in, for example, JP-A-4-35710, a bath in the bathtub is disclosed. After pumping water through a suction pipe with a circulation pump and filtering a relatively large solid content with a filter,
Bath water circulating purification heat retention device equipped with a bath water purification unit that sterilizes with ultraviolet rays or ozone, then purifies the bath water contaminants in a purification tank containing a filter medium, heats it with a heater and returns it to the bath Is provided.

Further, in the above apparatus, since contaminants after adsorbing and removing dirt such as sweat and fat from the human body adhere to the surface of the filter medium such as barley stone in the purification tank, for example, at regular intervals. Backwash water is flushed into the purification tank for cleaning.

[0004]

However, in the case of washing the filter medium by backflowing the bath water as described above, in many cases, the filter case for accommodating the filter medium is arranged vertically, and the filter case is Since the bath water is flowing from below to above, when a large amount of filter media is stored in the filter case,
When a filter or the like placed in a proper position in the circulation flow path starts to be clogged, the filter medium may not be surely stirred by the water pressure of the circulation pump.

Therefore, an object of the present invention is to reliably stir the filter medium by backflowing the bath water when washing the filter medium in the filtration case by backflowing the bath water.

[0006]

According to the present invention, bath water in a bathtub is sucked up by a circulation pump, circulated in the circulation passage, returned to the bath, and stored in a filtration case provided in the middle of the circulation passage. In the case of filtering with granular filter media and washing the filter media by backflowing the bath water through the bypass passages arranged in parallel with the filter case, the inside of the filter case is divided into a plurality of vertical parts by partition plates, and these partition plates Each of the filter media is housed in the upper part of the above, and a fountain port for ejecting bath water at the time of backflow is provided in the substantially central part of the partition plate.

Further, according to the present invention, a control plate is arranged below the fountain port of the partition plate located in the upper stage at a predetermined interval.

[0008]

When purifying the bath water, the circulating pump is operated to circulate the bath water in the bath in the circulation passage, pass through the filter, and filter by the filter medium contained in the filter.

On the other hand, for example, at a predetermined time interval, the bath water is back-flowed into the filtration case from the bypass passage, the bath water is jetted from the fountain port provided in the partition plate, and the jet medium is stirred to wash the filter medium to wash it. Restores the filtration capacity of.

Further, by providing the control plate below the fountain port of the partition plate provided in the upper stage, when the filter medium is agitated by the above-mentioned back flow,
Prevents suction of filter media into the fountain.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described first with reference to FIG. 1. (1) is a purifying apparatus body, in which bath water (3) in a bath (2) is sucked into a water pipe (5) by a circulation pump (4). It sucks up more and circulates,
Circulation channel (7) for spraying water into the bathtub (2) from the water discharge pipe (6)
A filtration case (8) connected downstream of the circulation pump (4) in the circulation flow path, a heating case (9) connected downstream of the filtration case, and a sterilization case connected downstream of the heating case. (10) and a running water switch (11) connected to the downstream of the sterilization case mainly.

(12) is a circulation pump (4) for the circulation passage (7)
A bypass flow path connecting the downstream side and the downstream side of the filtration case (8) is equipped with a first three-way valve (13) at the connection part with the downstream side of the filtration case (8), and at the same time as the circulation pump (4). Filtration case
A drainage channel (15) is connected to (8) via a second three-way valve (14), and the first three-way valve (13) and the second three-way valve (14) are interlocked with each other to provide the circulation pump. When connecting the downstream side of (4) to the downstream side of the filtration case (8), connect the upstream side of the filtration case (8) to the drainage channel.
Connected to (15), the circulation pump (4) sucks the bath water (3) from the inside of the bath (2) through the bypass channel (12) and backflows in the filtration case (8), and the filter medium in this filtration case (16) (16) ・
・ It is constructed so that after cleaning, the water is drained from the drainage channel (15) to the outside.

On the other hand, as shown in FIG. 2, the inside of the filtration case (8) is divided into upper and lower parts by a partition plate (17), and a fountain ( 19) and (20) are provided, and on the partition plate (17) and the bottom plate (18), a large number of water passage holes (21) (21) ... 2
3) is attached.

The jet port (20) provided on the bottom plate (18) is connected to the first three-way valve (13), and the inlet port (24) provided on the upper side surface of the filtration case (8) is the above-mentioned one. It is connected to the second three-way valve (14).

Further, the trays (22) (23) in the filtration case (8)
A large number of granular filter media (16) (16) ··· having a specific gravity of about 1.3, which are made of ceramic balls mainly composed of the above-mentioned bakuhanishi and solar stones, are housed on the heating case (9). ),
A heat generating heater (not shown) such as a sheathed heater is housed, and a sterilizing lamp (not shown) such as a mercury lamp which emits ultraviolet rays having a wavelength of about 185 nm or about 250 nm is housed in the sterilizing case (10) and the bath ( Circulation flow path (7) from 2)
The bath water sucked inside is sterilized and heated to a predetermined temperature to keep it warm.

If the distance l between the partition plate (17) and the upper surface of the lower filter medium (16) (16) ... Is increased, the filter medium (16) (16)
.. can be prevented from being sucked into the ejection port (19), but the size of the filtration case (8) becomes large, and the size of the main body (1) becomes large.

In FIG. 1, (25) is the circulation pump (4),
A control circuit for controlling the heater in the heating case (9), the sterilization lamp in the sterilization case (10), the first and second three-way valves (13), (14), etc., for example, at a predetermined fixed time interval. Switching the first and second three-way valves (13) and (14), the bath water sucked up by the circulation pump (4) is caused to flow through the bypass passage (12) -filtration case (8) -drainage channel (15), and the filtration case The filter water (16), (16), ... Is washed by backflowing the bath water (3) into the inside of (8) for a predetermined time.

At this time, the bath water (3) flows into the bypass passage (12).
From the jet nozzle (20), and after stirring the lower filter media (16) (16) ... as shown in Fig. 3, the jet nozzle (19) of the partition plate (17)
., And the upper filter medium (16) (16) ... is stirred, and then discharged from the drain port (15) via the second three-way valve (14) from the inflow port (24).

On the other hand, at the time of normal operation, the circulation pump (4) circulates the bath water (3) in the bathtub (2) through the water suction pipe (5).
After sucking into (7), circulation pump (4) -second three-way valve (1
4) -Filtration case (8) -First three-way valve (13) -Heating case (9)
-Sterilization case (10) -By successively passing through the running water switch (11), dirt such as fat in the bath water is adsorbed and removed by the filtration case (8) and heated to a predetermined temperature by the heating case (9). After that, the water is returned from the water discharge pipe (6) to the bath (2), and the bath water (3) is purified and kept warm.

FIG. 4 shows another embodiment of the present invention.
A control plate (26) is arranged below the fountain opening (19) provided in the partition plate (17) so as to face the bath water (3) and the filter medium (16) (1).
6) ・ ・ When washing, the filter media (16) (16) ・ ・ that is being stirred
It is configured so that it does not flow into (19).

With this structure, the bath water spouted from the spouting port (20) of the bottom plate (18) hits the control plate (26) and is decelerated, and the filter medium (16).
(16) ・ ・ While preventing suction into the fountain (19),
Inlet for filter media (16) (16) ... located above the partition plate (17)
Prevent inflow to (24).

[0022]

According to the structure of the present invention, the capacity of the filter medium can be increased by dividing the inside of the filter case for storing the filter medium for filtering the bath water into a plurality of stages in the vertical direction and storing the filter medium in a plurality of divided parts. Efficiently and reliably agitate the filter medium with the circulation capacity of the bath water by the circulation pump to restore the filtration capacity even when many settings are made to improve the filtration capacity, or during so-called backwashing due to the backflow of the bath water. Can be done.

Further, according to the structure of the present invention, the control plate is arranged below the fountain port of the partition plate located in the upper stage in the filtration case, so that the backflow of the bath water causes the backflow of the bath water from the bottom of the filtration case into the filtration case. Even when the water flows backward, the flow of the bath water can be suppressed by the control plate, and the suction of the filter medium into the fountain can be prevented.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram showing an embodiment of the present invention.

FIG. 2 is a side vertical cross-sectional view showing an embodiment of the main part of the present invention.

FIG. 3 is a side vertical cross-sectional view for explaining the operation of the main part of the same.

FIG. 4 is a side elevational sectional view showing another embodiment of the present invention.

[Explanation of symbols]

 2 Bathtub 3 Bath water 4 Circulation pump 7 Circulation flow path 8 Filtration case 9 Heating case 12 Bypass passage 16 Filter material 17 Partition plate 19 Fountain port 26 Control plate

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Noriyoshi Matsumura 3-201 Minamiyoshikata, Tottori-shi, Tottori Sanyo Electric Co., Ltd. (72) Inventor Soichiro Ohama 3-201 Minamiyoshikata, Tottori-shi Tottori Sanyo Tottori Electric Co., Ltd.

Claims (2)

[Claims] 1. The bath water in the bath tub is sucked up by a circulation pump to circulate in the circulation channel and then returned to the bath, and is filtered by a granular filter material housed in a filtration case provided in the middle of the circulation channel. In the one for washing the filter medium by backflowing the bath water into the filter case by a bypass passage arranged in parallel in the filter case, the inside of the filter case is vertically partitioned by a partition plate and above the partition plates. A bath water circulation purifying apparatus, characterized in that each of the filter media is housed and a fountain port for jetting the bath water at the time of the backflow is provided in a substantially central portion of the partition plate. 2. The bath water circulation purifying apparatus according to claim 1, wherein a control plate is arranged below the fountain opening of the partition plate located at the upper stage at a predetermined interval.