JPH09206234A - Purifier for bath water - Google Patents

Abstract

(57) [Summary] [Object] The present invention provides a bath water purifying apparatus which is provided outside a bathtub and is configured to continuously circulate hot water in the bathtub by forcibly circulating the hot water with a water pump. , The purification case main body and the lid for closing the entrance and exit ensure the watertightness of the purification case and enhance the purification efficiency. A wedge groove 11 is formed on the entire circumference of the inner peripheral surface of the inlet / outlet 8 of the purification case main body 7, and a wedge piece 12 that is wedged with the wedge groove 11 is formed on the opening edge portion of the lid body 9 thereof. Furthermore, an O-ring 14 is interposed between the inner peripheral surface of the purification case and the outer peripheral surface of the lid 9 above them.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bathtub hot water purifying apparatus which is disposed outside a bathtub to circulate and purify the bathtub hot water.

[0002]

2. Description of the Related Art The applicant of the present invention has found that an outer case disposed outside a bathtub, a sealed purification case accommodated in the outer case, a purification unit accommodated in the purification case, and the outer case. A water pump housed in the case, and by operating the water pump, the inside of the purification case is maintained at a negative pressure to suck unpurified hot water in the bath into the purification case. After purifying the hot water through the purification unit, the purified hot water is forcibly returned to the bathtub by the water pump.

[0003]

By the way, in such a purifying apparatus, the inside of the purifying case accommodating the purifying unit is maintained at a negative pressure, and the bath water is sucked into the purifying case for purification. Therefore, the purification case consisting of the purification case main body and the lid is always sealed in a sealed manner so that the bath water can be efficiently circulated and the purification unit housed in the purification case can be easily maintained. It is easy to attach and remove the purification case body and lid so that
It must be easy to do.

The present invention has been made in view of the above circumstances, and the purification case body and the lid for closing the entrance / exit can be easily and surely sealed in a hermetically sealed state, and the purification case body and the lid can be attached and detached. It is an object of the present invention to provide a novel bath water purifying device that can be extremely easily performed and can satisfy the above requirements.

[0005]

In order to achieve the above object, according to the invention of claim 1, an outer case disposed outside the bathtub and a hermetical purification housed in the outer case. A case, a purification unit housed in the purification case, and a water pump housed in the outer case, and by operating the water pump to maintain a negative pressure in the purification case, After sucking unpurified hot water in the bath into the purification case and purifying this hot water through the purification unit,
A bathtub hot water purification device in which the purified hot water is forcibly recirculated into the bathtub by the water pump, wherein the closed purification case has a purification case body and a lid body that closes the entrance and exit. A wedge groove is formed around the entire circumference of the purification case body near the entrance / exit, while a wedge piece is formed integrally with the lid body to engage with the wedge groove. Outside the wedge groove and wedge piece,
An O-ring is interposed between the inner peripheral surface of the purification case body and the outer peripheral surface of the lid.

According to a second aspect of the present invention, in the first aspect of the present invention, the lid-like accommodating portion formed on the upper portion of the sealed purification case body is larger than other main portions. Is integrally formed, and the lid is housed in the lid housing.

Further, according to the invention of claim 3, in the structure of claim 1, the upper part of the lid is
It is characterized in that a tightening knob is provided for tightening and fixing the lid body to the purification case body.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described based on embodiments of the present invention shown in the accompanying drawings.

First, a first embodiment of the present invention will be described with reference to FIGS.

FIG. 1 is a cutaway perspective view of a bathtub having a purification device installed, FIG. 2 is a partially cutaway front view of the purification device taken along the line 2 in FIG. 1, and FIG. 3 is a line 3-3 of FIG. 4 is a side view of the purifying apparatus along line 4, FIG. 4 is a longitudinal sectional view of the purifying apparatus along line 4-4 of FIG. 2, and FIG. 5 is a longitudinal sectional view of the purifying apparatus along line 5-5 of FIG. 5 is a cross-sectional view of the purification device taken along line 6-6 of FIG. 5, FIG. 7 is an enlarged partial cross-sectional view taken along line 7-7 of FIG. 3, and FIG. 9 is an enlarged view of the line enclosing portion, FIG. 9 is a perspective view of the lid tightening portion, FIG. 10 is an enlarged view of the virtual line enclosing portion taken along the line 10 in FIG. 5, and FIG. 11 is 11 of FIG.
A partially enlarged cross-sectional view taken along line -11, and FIG.
Partial enlarged view of the arrow, FIG. 13 is an enlarged transverse sectional view taken along line 13-13 of FIG. 3, FIG. 14 is an overall perspective view of the purification unit,
FIG. 15 is a vertical cross-sectional view of the purification unit taken along line 15-15 of FIG. 14, and the structure of the purification device will be described in detail below with reference to FIGS. 1 to 15.

As shown in FIG. 1, the bathtub hot water purifying apparatus C is constructed so as to be installed and used on the edge of the bathtub V in the bathtub Rb, and is housed inside the outer case Co and inside thereof. Sealed purification case Cc and this purification case Cc
It has a pair of purification units Uc and Uc housed inside and a water pump Pw housed inside the outer case Co.

The outer case Co is made of a hard synthetic resin, and is composed of a rectangular flat case body 1 and a lid case 2 whose open front surface and open top surface are openably and closably closed. The lower portions of both side walls of the lid case 2 are hingedly connected to the lower portions of both side walls of the case body 1,
The lid case 2 can be opened and closed upward with respect to the case body 1. As clearly shown in FIGS. 3 and 7, a pair of left and right engaging protrusions 4 and 4 are provided on upper portions of both side walls 1s and 1s of the case body 1 whose front edges are inclined downwardly upward. Corresponding to the engaging projections 4 and 4 above the side walls 2s, 2s of the one-side lid case 2 whose rear edge is inclined downwardly downward. Left and right engaging holes 5 and 5 are provided, and the lid case 2 is locked at the closed position by elastically engaging these engaging holes 5 and 5 with the engaging protrusions 4 and 4, respectively. can do. A plurality of support legs 6 are fixed to the bottom wall 1b of the case body 1, and the outer case Co can be installed on the edge of the bathtub V through the support legs 6.
Further, as shown in FIGS. 1 to 3, the lid case 2 of the outer case Co
A mirror M is stretched on the front surface of.

As shown in FIG. 5, in the outer case Co, a closed purification case Cc and a water pump Pw, which are molded of a hard synthetic resin material, are accommodated and installed in parallel.

Next, the structure of the purification case Cc is shown in FIGS.
The purification case Cc will be described in detail with reference to
It is composed of a purification case body 7 and a lid 9 that closes the inlet / outlet 8 in an openable / closable manner. The purification case body 7 is formed into a flat rectangular bucket shape, and an inlet / outlet port 8 is opened on the upper surface thereof. As clearly shown in FIGS. 4, 5 and 10, the purification case main body 7 has a lid receiving portion 10 formed on the upper portion thereof so as to be slightly larger than the lower main portion thereof over the entire circumference thereof. A wedge groove 11 having a V-shaped cross section is formed on the inner peripheral surface of the bottom of the lid receiving portion 10 over the entire circumference. On the other hand, as shown in FIG. 4, the lid 9 is formed in a square cap shape with an open lower surface, and a wedge piece 12 is integrally formed downward at the lower edge thereof over the entire circumference thereof. On the upper outer peripheral surface of the wedge piece 12,
A concave groove 13 that opens outward is formed over the entire circumference, and an O-ring 14 is fitted in the concave groove 13.

As shown in FIGS. 4 and 5, the purification case body 7
The lid body 9 is inserted into the lid body receiving portion 10 at the upper part of the lid body 9, and the wedge piece 12 at the lower edge of the lid body 9 is fitted into the wedge groove 11, so that the lid body 9 becomes the purification case body 7. The inlet / outlet 8 of the purification case body 7 can be closed in a state of being submerged inside, and the O-ring 14 is further sandwiched between the concave groove 13 and the inner surface of the lid receiving portion 10, The space between them can be sealed in a watertight manner, and the purification case Cc composed of the purification case body 7 and the lid 9 that closes the inlet / outlet 8 can be held in a sealed state. Further, by pulling the lid 9 upward, the lid 9 can be easily separated from the purification case body 7.

As clearly shown in FIGS. 4 and 5 and FIGS. 8 and 9, a tightening knob 15 is rotatably fitted to the central portion of the lid 9 via an O-ring 16. This tightening knob 15
The hollow shaft portion 15 _{1 of the above} is freely detachable from the upper end of an air bleeder 20 (detailed later) made of a hard material such as a metal material, which is erected on the bottom wall 7b of the purification case body 7 via an O-ring 21. It is fitted into and formed in the hollow shaft portion 15 _1, a helical tightening cam groove 17, a pin 18 projecting from the air extubation 20 is engaged. Therefore, when the tightening knob 15 is rotated clockwise (direction of arrow a in FIG. 11), the pin 18 slides in the tightening cam groove 17, whereby the tightening knob 15 is pulled downward, The lid 9 is watertightly fastened to the purification case body 7. When the tightening and fastening force is increased, the wedge engaging force between the wedge groove 11 and the wedge piece 12 is further increased.

Purification case Cc configured as described above
Is housed and installed in the outer case Co, in which case the flat bottom wall 7b of the purification case Cc, as shown in FIG.
The outer case Co is closely seated on the flat bottom wall 1b so that water does not enter between them.

As shown in FIGS. 4 and 5, the purification case body 7
And one side portion of the bottom walls 7b, 1b of the case body 1 (FIG. 5,
On the right side), an inflow port 23 is bored, and a straight inflow pipe 24 communicating with the inflow port 23 is erected upright. The inflow pipe 24 extends upward in the purification case Cc. And its upper end opens to the upper part of the case Cc. The inflow port 23 is connected to an inflow hose 25 via an elbow 24, and the inflow hose 25 is connected to the outer case Co.
Is connected to a suction / drainage head Hw (see FIG. 16), which will be described later, which is provided in the bathtub V through the lower portion of the. An outlet 27 is opened at the center of the bottom walls 7b, 1b of the purification case body 7 and the case body 1, and the outlet 27 is provided with an elbow 28 and a communication hose 29, which serves as a suction port for a water pump Pw described later. Connected to 52. As clearly shown in FIG. 4, a support member 30 is screwed 31 to the bottom wall 7b of the purification case Cc, and the support member 30 is made of a thin metal pipe having rigidity, and the air bleeder 20 is provided. The bottom edge of is stuck. The lower end of the air bleed tube 20 communicates with the outlet 27 and extends vertically in the purification case Cc, and the upper end of the air bleed tube 20 is connected to the hollow shaft portion 15 ₁ of the tightening knob 15 as described above. It is fitted in via a ring 21. Also, as shown in FIG.
A flexible air tube 32, which communicates with the air bleeder 20, is connected to the hollow shaft portion 15 ₁ .

As shown clearly in FIG. 8, the tightening knob 1 is
In the vicinity of 5, a cylindrical air reservoir 34 having an open lower surface is formed at the uppermost portion of the upper wall of the lid 9, and the air reservoir 34 has a guide hanging from the upper wall of the lid 9. A float 36 is provided which is supported by a rod 35 so as to be able to move up and down.
The flexible air tube 3 is attached to the float 36.
The other end of 2 is connected, and this air tube 32 is
It communicates with the air reservoir 34 through the inside of the float 36. Therefore, as will be described later, in the initial stage of operation of the purifying device C, the air stored in the air reservoir 34 is discharged to the outside of the purifying case Cc through the air tube 32, the air bleeder 20, and the outlet 27. After the air is discharged from the air reservoir 34, the float 36 is seated on the upper wall of the air reservoir 34 to prevent water from flowing into the air reservoir 34.

A pair of purification units Uc, Uc are detachably accommodated in the purification case Cc through its entrance / exit 8. As shown in FIG. 5, these purification units Uc, Uc are symmetrically arranged on both the left and right sides of the air vent pipe 20, and their bottom surfaces are the bottom wall 7b of the purification case body 7 and the support. The member 27 is tightly seated on the member 30, whereby the outlet 27 is watertightly shielded from the gap between the escape grooves 50, 50 between the purification units Uc, Uc, and the hot water in the gap flows to the outlet 27. There is no such thing.

Thus, the pair of purification units Uc, Uc are
Since they have the same structure, one of them is shown in Fig. 1.
Referring to FIGS. 4 and 15, in detail, FIG. 14 is a perspective view of the purification unit, and FIG. 15 is a cross-sectional view of the main parts of the purification unit taken along line 15-15 of FIG. The unit case 38 of this purification unit Uc is formed in a rectangular flat shape, and the front and rear surfaces thereof are opened over substantially the entire surface thereof, and the inside thereof is the front and rear partition walls 39, 40 made of porous plates. Are divided into front and rear filtration chambers 41 and 42 and front and rear active chambers 43 and 44 inside thereof, and in the front and rear filtration chambers 41 and 42, there is a plate-shaped fiber filter 45 whose outer surface is exposed to the outside. The front and rear active chambers 4 are accommodated
Activated stones 46 such as barley stone are loaded in the insides of 3, 44. Inside the front and rear active chambers 43 and 44, the flat clean water chamber 4 is formed by the front and rear partition walls 39 and 40.
7 is defined, and this clean hot water chamber 47 has a unit case 3
8 is communicated to the outside through an outlet 48 formed in the bottom wall of
Further, an injection port 49 is preliminarily opened on the upper wall of the unit case 38, and after the active stones 46 are loaded into the front and rear active chambers 43, 44 through the injection port 49, the injection port 49 is closed. To be

As shown clearly in FIG. 14, the left and right end walls of the unit case 38 are formed with escape grooves 50, 50 having a concave cross section in the vertical direction in the vertical direction thereof.
0 and 50, when the purification unit Uc is housed in the unit case 38, the air vent pipe 20 and the inflow pipe 2
The pair of purification units Uc, Uc can be arranged adjacent to each other in parallel while avoiding the number 4. Also, the unit case 38
A plurality of reinforcing ribs 51 ... Are respectively bridge-connected to the front and rear surfaces of the opening of the reinforcing ribs 5 at intervals.
.. face the inner surfaces of the front and rear walls of the purification case main body 7 so as to prevent the purification case 7 from being deformed by the negative pressure of the purification case main body 7, especially the front and rear walls thereof.

Thus, the pair of purification units Uc, Uc are
It can be reversibly accommodated in the purification case body 7, that is, either of these surfaces may face the inner surfaces of the front and rear walls of the purification case body 7.

As shown in FIGS. 5 and 6, a water pump Pw is housed in the outer case Co in parallel with the purification case Co. This water pump Pw is a low-priced line pump with low operating noise, and has a suction port 52 at its lower part.
However, a discharge port 53 is provided on the upper part thereof, and the suction port 52 and the outlet 2 at the lower part of the purification case Cc are provided.
7 is an elbow 54, a communication hose 29, and an elbow 28.
Is connected and connected via the discharge port 53.
Is connected to a suction / drainage head Hw provided in the bath V through an inverted U-shaped discharge pipe 57, an elbow 58 and a discharge hose 59.

Next, the structure of the suction / drainage head Hw will be described mainly with reference to FIGS. 16 to 18. FIG. 16 is a front view of the suction / drainage head Hw, and FIG. 17 is a line 17-17 in FIG. 18 is a vertical cross-sectional view of the suction / drainage head taken along line 1 in FIG.
FIG. 8 is an enlarged partial sectional view of the water suction / drainage head taken along line 8-18.

The housing 61 of the suction / drainage head Hw is formed in a bag shape having an inlet / outlet 62 at the upper end, and the free ends of the inflow and discharge hoses 25, 59 are inserted and connected to the inlet / outlet 62. ing. Several suction cups 63, 63 are detachably attached to the back surface of the housing 61, and the suction cups 63, 63 are fixed to the bathtub V of the housing 61 by adsorbing these suction cups 63, 63 on the inner wall surface of the bathtub V. . A suction / discharge port 64 is opened in the front wall of the housing 61, and a suction / drain block 65 is detachably fixed to the suction / discharge port 64. The suction / drainage block 65 is provided with a cylindrical male pipe 66 inserted into the suction / discharge port 64, and a female pipe provided in the housing 61 and screwed to the male pipe 66 with the front wall of the housing 61 interposed therebetween. And 67. At the front end of the male pipe 66 of the intake / exhaust block 65, the housing 61
A suction / drainage cap 68 is detachably fitted from the outside, and the female pipe 67 of the suction / drainage block 65 is bifurcated in the housing 61, and the inflow hose 25 is connected to one of them through a joint 69. The other end is connected to the discharge hose 59 via a joint 70. The inflow hose 25 is an intake / drain block 6.
5, the water absorption passage 71 and the water absorption and drainage cap 68
An injection beak which communicates with the inside of the bathtub V through a water suction port 73 opened to the inside, and the discharge hose 59 is connected to the discharge passage 72 formed in the water suction / drain block 65 and the water discharge port 72 which penetrates the water suction / drain cap 68. The injection beak 7 is communicated with the inside of the bathtub V through the discharge passage 72.
4, an air ejection pipe 75 is inserted, and this air ejection pipe 75 is connected to an air supply source (not shown), and ejects bubbled air into the bathtub V through the injection beak 74 as necessary. You can do it.

By the way, when the water pump Pw is operated, the unpurified bath water in the water tank V passes through the water suction port 73, the water suction passage 71, and the inflow hose 25 as shown by arrows i in FIGS. The purified bath water supplied to the purification device C and purified by the purification device C is discharged from the water pump Pw as shown in FIGS. It is discharged into the bathtub V through the beak 74.

To explain the operation of this embodiment, when the purifying device C is used, the purifying case Cc housed in the outer case Co installed on the edge of the bath V is placed in the purifying case body 7. Stores water up to the vicinity of the entrance / exit 8 as shown by the liquid level WL in FIG. As a result, the water pump Pw is also filled with water. On the other hand, the suction / drainage head Hw is immersed in the bath water of the bath V.

When the water pump Pw is started here, the stored water in the closed purification case Cc is sucked into the water pump Pw through the outlet 27 and the communication hose 29, and at the same time, the suction force of the water pump Pw is increased. Since it also acts on the void portion A above the sealed purification case Cc via the air vent pipe 20, the void portion A tends to have a negative pressure, and the air stored in the air reservoir 34 is indicated by the alternate long and short dash line in FIG. As shown by the arrow, the water is gradually sucked by the water pump Pw together with water through the thin air vent tube 20. As a result, the air in the space A is discharged, so that the water level WL in the purification case Cc gradually rises and the air reservoir 34
All the stored air inside is discharged to the outside. As a result, the cleaning case C is filled with the bath water, and the air removal from the cleaning case Cc can be completed.

In the process of bleeding air from the cleaning case Cc, the water in the air reservoir 34 is sucked into the water pump Pw together with the hot water in the bath. Since the water pump Pw is sucked into the water pump Pw one by one, the operation of the water pump Pw is not affected at all, and the float 36 rises in the air reservoir 34 to finish the air bleeding in the air reservoir 34. Then
The upper surface of the float 36 is in close contact with the inner surface of the lid 9 so that the bath water does not flow between them, and after the air in the air reservoir 34 has been evacuated, the hot water will almost always flow into the air bleeder 20. Without the inner wall surface of the air reservoir 34 or the float 36
No algae or moss adheres to and propagates.

As described above, the unpurified hot water that has flown into the purification case Cc after the air is automatically removed from the purification case Cc as shown in FIG. After being purified by passing through the respective fiber filters 45 and the activated stones 46 of the pair of left and right purification units Uc, Uc of Cc, it is sucked into the water pump Pw and discharged from there to the bathtub V as described above. .

By the way, when the unclean water passes through the fiber filter 45, the hot water is exposed evenly in the purification case Cc and flows evenly over the wide area of the filtration surface of the fiber filter 45 to enhance the filtration efficiency. When the hot water passes through the filtration surface and is slowed down, the flow velocity of the hot water slows down, whereby the propagation of aerobic microorganisms is promoted in the fiber filter 45 and the organic purification action of the unclean hot water by the aerobic microorganisms is enhanced. To be done. Further, the hot water that has passed through the fiber filter 45 flows to the activated stone 46. In this case, the hot water is the activated stone 4
Evenly flowing over the wide active surface of 6, the active stone 46 elutes natural minerals and adsorbs and decomposes pollutants, organic substances, etc. that could not be purified by the fiber filter 45. Then, the unclean water passes through the fiber filter 45 and the activated stone 46 to be purified, and becomes soft and clear clean water which is sucked into the water pump Pw. Then, the pressurized clean hot water from the water pump Pw is returned to the bathtub V.

As shown in FIG. 12, on the left and right sides of the back of the case body 1 of the outer case Co, a pair of hook holes 8 in the shape of a keyhole are formed.
0 and 80 are provided, and instead of mounting the purifying device C on the edge of the bathtub V, it can be wall-mounted and supported on the wall surface of the bathroom Rb.

Further, as shown in FIG. 13, a decorative plate 81 for covering the supporting legs 6 of the outer case Co can be detachably attached by means of a sandwiching piece 82 projecting from the rear surface thereof. Well, by doing so, it is possible to enhance the overall design effect of the purifying device C and improve its appearance.

Next, a second embodiment of the present invention will be described.

In this second embodiment, the inflow and discharge hoses connected to the purifying device and the water pump are arranged outside the bath. FIG. 19 is a perspective view of the bath showing the second embodiment. FIG. 20 is an enlarged cross-sectional view of the suction / drainage part of the bathtub hot water taken along line 20-20 in FIG. 19, and the same members as those in the first embodiment are designated by the same reference numerals.

In the second embodiment, the housing for absorbing and draining water in the first embodiment is unnecessary, and the male pipe 66 of the absorbing and draining block 65 fixed to the bath V penetrates the side wall Ws of the bath V. And the intake / drain block 65 at the rear end
The female tube 67 is screwed with the side wall Ws sandwiched therebetween. A suction / drainage cap 68 provided in the bathtub V is fitted to the front end of the male pipe 66, and the bifurcated branch portion of the female pipe 67 is connected to the outside of the bathtub V via joints 69 and 70, respectively. The inflow and discharge pipes 25, 59 arranged are connected.

In the second embodiment, therefore, it is not necessary to insert the suction and discharge hoses 55 and 59 into the bath V, so that the bath V can be cleaned, and As shown in FIGS. 19 and 20, it is suitable to dispose the purifying device C outside the bathroom Rb.

Although the embodiments of the present invention have been described above, the present invention is not limited to the embodiments and various embodiments can be made within the scope of the present invention. For example, in the above-described embodiment, the purifying device is installed on the edge of the bathtub in the bathroom, but the purifying device may be provided at another place in the bathroom or outside the bathroom, and the purifying unit has a desired function. The structure is not limited as long as it plays. Further, the purification case may be made of a material other than synthetic resin.

[0040]

As described above, according to the first aspect of the present invention, in the apparatus for purifying bath water, the closed purification case has the purification case main body and the lid that closes the inlet / outlet. A wedge groove is formed around the entire periphery of the purification case main body near the entrance and exit, while a wedge piece that engages with the wedge groove is integrally formed on the peripheral edge of the lid body. On the outer side of the wedge piece, an O-ring is interposed between the inner peripheral surface of the purification case body and the outer peripheral surface of the lid body, so that the purification case is always reliably sealed in the usage state. The hot water in the bathtub can always be sucked efficiently to improve the purification efficiency, and the entrance and exit of the purifier can be easily opened, so that the purifying unit and the like housed in the purifying case can be easily and easily maintained.

According to the second aspect of the present invention, in addition to the features of the first aspect of the invention, the lid of the closed purification case body is formed in a larger size than the other main parts on the upper part thereof. Since the body accommodating portion is integrally formed and the lid is accommodated in the lid accommodating portion, the purification case itself can be formed compactly, and the opening edge of the lid is inside the purification case body. There is no need to worry about the lid coming off during handling, etc.

According to the third aspect of the invention, in addition to the features of the first aspect of the invention, an upper portion of the lid is provided for fastening and fastening the lid to the purification case body. Since the tightening knob is provided, the tightening and fastening operation between the purification case body and the lid can be easily performed.

[Brief description of drawings]

FIG. 1 is a cutaway perspective view of a bathtub equipped with a purification device.

FIG. 2 is a partially cutaway front view of the purification device taken along the line 2 in FIG.

FIG. 3 is a side view of the purification device taken along line 3-3 of FIG.

4 is a vertical cross-sectional view of the purification device taken along line 4-4 in FIG.

5 is a vertical cross-sectional view of the purification device taken along line 5-5 of FIG.

6 is a cross-sectional view of the purification device taken along line 6-6 of FIG.

FIG. 7 is an enlarged partial sectional view taken along line 7-7 of FIG.

FIG. 8 is an enlarged view of a portion surrounded by a virtual line as seen from the direction of arrow 8 in FIG.

FIG. 9 is a perspective view of a lid tightening portion.

FIG. 10 is an enlarged view of a virtual line encircling portion as viewed from the direction of arrow 10 in FIG.

11 is a partially enlarged sectional view taken along the line 11-11 in FIG.

FIG. 12 is a partially enlarged view taken along the arrow 12 in FIG.

13 is an enlarged cross-sectional view taken along line 13-13 of FIG.

FIG. 14 is an overall perspective view of a purification unit

15 is a cross-sectional view of the main parts of the purification unit taken along line 15-15 of FIG.

FIG. 16 is a front view of a suction / drainage head.

FIG. 17 is a vertical cross-sectional view of the suction / drainage head taken along line 17-17 of FIG.

FIG. 18 is a partially enlarged view of the water suction / drainage head taken along line 18-18 of FIG.

FIG. 19 is a cutaway perspective view of a bathtub equipped with a purifying device (second embodiment).

20 is an enlarged vertical cross-sectional view of the water intake / drainage section taken along line 20-20 of FIG.

[Explanation of symbols]

 7 ・ ・ ・ ・ ・ ・ Purification case main body 8 ・ ・ ・ ・ ・ ・ Port 9 ・ ・ ・ ・ ・ ・ Lid body 10 ・ ・ ・ ・ ・ Lid housing part 11 ・ ・ ・・ ・ ・ Wedge groove 12 ・ ・ ・ ・ Wedge piece 14 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ O-ring 15 ・ ・ ・ ・ ・ ・ Tightening knob Cc ・ ・ ・ ・ ・ ・ Cleaning case Co ・ ・ ・··· Outer case Pw ···· Water pump Uc ··· · Purification unit V ···· Bathtub

Claims (3)

[Claims] 1. An outer case (Co) disposed outside the bath (V), a sealed purifying case (Cc) housed in the outer case (Co), and the purifying case (Cc). A purification unit (Uc) housed inside and the outer case (C
o) a water pump (Pw) housed in the cleaning case (Cc) by operating the water pump (Pw).
By keeping the inside pressure negative, the purification case (Cc)
After unpurified hot water in the bathtub (V) is sucked into the bathtub and the hot water is purified through the purification unit (Uc), the purified hot water is forced into the bathtub (V) by the water pump (Pw). A bath water purifying device, which is adapted to recirculate, wherein the closed purification case (Cc) has a purification case body (7) and a lid body (9) that closes an inlet / outlet (8) thereof. A wedge groove (11) is formed around the entire periphery of the purification case body (7) near the entrance (8), while a wedge groove (11) is formed around the periphery of the lid (9). A wedge piece (12) to be wedged is integrally formed, and further on the outer side of the wedge groove (11) and the wedge piece (12), the inner peripheral surface of the purification case body (7) and the outer periphery of the lid body (9). O between the faces
A bathtub hot water purification device, characterized in that it is provided with a ring (14) interposed. 2. The closed purifying case body (7) is integrally formed with a lid accommodating portion (10) which is formed to be larger than the other main parts on the upper part thereof.
0) The lid (9) is housed in (0), the bath water purifying apparatus according to claim 1, characterized in that. 3. A tightening knob (15) for tightening and fastening the lid (9) to the purification case body (7) is provided on an upper portion of the lid (9). , Bath water purification device.