JP3120455B2 - Bath water filter - 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 water filter used for a bathtub or the like.

[0002]

2. Description of the Related Art In recent years, bath water filters have often been bathed in the same bathtub a plurality of times in Japan, and in order to purify hot water, a bath water filter equipped with a jet pump or a portable bath water filter has been proposed. Various proposals have been made, such as vessels.

[0003] Hereinafter, a conventional bath water filter provided with a jet pump will be described. FIG. 2 shows a longitudinal section of a conventional bath water filter. FIG. 3 shows a flow path of hot and cold water during a filtering operation of a conventional bath water filter. FIG. 4 shows a flow path of hot and cold water during a backwash operation of a conventional bath water filter.

In FIG. 2, reference numeral 1 denotes a bath water filter.
Reference numeral 2 denotes a filtration tank which forms an outer surface of the bath water filter 1. Reference numeral 3 denotes a filtration inflow pipe, which is connected so that hot water flows into the upper part of the filtration tank 2. 4 is the filtration tank 2
Is a filtration outflow pipe connected to the bottom of the filter so that the filtered hot water flows out. Reference numeral 5 denotes a fixing member including a fixing screw having one end provided on an upper wall of the filtration tank 2. 6
Is a solid-gas separator, which is fixed at the other end of the fixing member 5.

[0005] Numerals 7a and 7b are watering plates, which are respectively disposed on the upper inner wall and the lower inner wall of the filtration tank 2. 8
Is a filter bed, which is provided at a lower part in the filtration tank 2. Reference numeral 9 denotes a filter medium, which is laminated on the filter bed 8. 10
Are bubbles, which are mixed in the hot and cold water. The flow path of hot and cold water during the filtration operation and the backwash operation of the conventional bath water filter will be described below with reference to FIGS.

FIG. 3 shows a hot water flow path during a filtration operation of a conventional bath water filter. FIG. 4 shows a flow path of hot and cold water during a backwash operation of a conventional bath water filter. 11 is a bathtub. Reference numeral 12 denotes a suction port,
It is arranged at the lower part of the side wall of, and sucks hot water. A suction pipe 13 is connected to the suction port 12. A jet pump 14 connects the suction pipe 13. A discharge pipe 15 is connected to the jet pump 14. Reference numeral 16 denotes a spout having a built-in bubble generator (not shown).
Is connected to the discharge pipe 15 on the side wall.

Reference numeral 17 denotes an air hose, which is provided at the jet port 16. Reference numeral 18 denotes an inflow pipe, which branches off from the discharge pipe 15. A three-way joint 19a connects the inflow pipe 18 to one end. 20a is a three-way valve provided inside the three-way joint 19a. A drain pipe 21 has one end connected to the three-way joint 19a. Reference numeral 3 denotes a filtration inflow pipe connected to the three-way joint 19a.

Reference numeral 2 denotes a filtration tank. 4 is a filtration outflow pipe. 19b is a three-way joint for connecting the filtration outflow pipe 4. 20b is a three-way valve provided on the three-way joint 19b,
Reference numeral 22 denotes a branch pipe, which branches from the inflow pipe 18 and is connected to the three-way joint 19b. 23 is an outflow pipe, a three-way joint 1
9b merges with the suction pipe 13.

A flowing water path for filtering hot and cold water of the bath water filter 1 configured as described above, a backwashing path for back-flowing hot water to wash the bath water filter 1, and the inside of the bath water filter 1 The condition of the filter medium 9 will be described.

First, in FIG. 3, when the jet pump 14 is started, hot water flows from the bathtub 11 into the suction port 12 and the suction pipe 13.
Through the jet pump 14. After that, a part of the hot and cold water passes through the discharge pipe 15 and is taken in from the air hose 17 by a bubble generator (not shown) incorporated in the jet port 16 to form a jet jet into the bathtub 11. It flows into the bathtub 11 from the spout 16.

The hot water branched from the discharge pipe 15 and flowing into the inflow pipe 18 flows into the filtration tank 2 via the three-way joint 19a and the filtration inflow pipe 3. The filtration tank 2
The hot and cold water, from which dirt and dust are filtered, passes through the suction pipe 13 via the filtration outflow pipe 4, the three-way joint 19b and the outflow pipe 23.
To the jet pump 14 together with the hot and cold water sucked from the bathtub 11, and the same process as above is repeated.

Referring to FIG. 4, the three-way valves 20a and 20a of FIG.
By switching 0b, the hot water flowing through the inflow pipe 18 flows into the branch pipe 22, and flows into the filtration tank 2 from the filtration outflow pipe 4 via the three-way joint 19b. Next, the flowing hot water separates dirt and dust attached to the filter medium 9 (see FIG. 2) from the filter medium 9 and is discharged to the outside together with the hot water via the filtration inflow pipe 3, the three-way joint 19a and the drain pipe 21. You.

In FIG. 2, the hot and cold water flowing along the backwash path flows into the filtration tank 2 from the filtration outflow pipe 4 including the bubbles 10 generated by the jet jet, and is dispersed by the water spray plate 7b, thereby performing the filtration operation. Sometimes, it passes through a filter bed 8 provided to prevent the filter medium 9 from flowing out, and separates dirt and dust attached to the filter medium 9 from the filter medium 9. At this time, the bubbles 10 contained in the hot and cold water float including the filter medium 9. The air bubbles 10 containing the floating filter medium 9 collide with the solid-gas separation plate 6, and the impact causes the filter medium 9 to fall. In addition, the bubble 1
The filter medium 9 included in the filter tank 0 is dropped by the impact of the water flow when passing through the narrow flow path between the side wall of the filtration tank 2 and the solid-gas separation plate 6 so as not to flow out of the filtration tank 2.

[0014]

However, in the above-mentioned conventional structure, a part of the filter medium 9 flows out of the filtration tank 2 along with the bubbles 10 without being separated from the bubbles 10 by the solid-gas separation plate 6. Had problems.

An object of the present invention is to provide a bath water filter 1 in which the filter medium 9 does not flow out of the filtration tank 2 even during a backwash operation.

[0016]

In order to achieve this object, a bath water filter according to the present invention comprises one or a plurality of water filters provided on an inner wall surface of a filtration tank to which a filtration inflow pipe is connected in a direction substantially perpendicular to the direction of water flow. It has a configuration provided with a separating member.

[0017]

With this configuration, the hot water flowing from the filtration outflow pipe at the time of back washing separates dirt and dust adhered to the filter medium, and bubbles contained in the hot water float including a part of the filter medium. The bubbles that have floated collide with the solid-gas separator, and the impact drops the filter medium. Next, some of the air bubbles including the filter medium that has escaped the drop fall due to the impact of the water flow when passing through a narrow flow path between the side wall of the filtration tank and the solid-gas separator. Further, the filter medium contained in the air bubbles that have escaped the fall collides with one or a plurality of separating members disposed substantially perpendicularly to the water flow direction and accumulates on the inner wall surface of the filtration tank to which the filtration inflow pipe is connected. Next, the bubbles including the accumulated filter medium start to move, and when passing through the separation member, the filter medium is separated from the bubbles by the impact of the passage and falls. The air bubbles from which the filter medium has been separated and the hot and cold water containing dirt and dust are discharged out of the filtration tank via the filtration inflow pipe.

[0018]

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

FIG. 1 shows a vertical section of a bath water filter according to an embodiment of the present invention. In FIG. 1, 1 is a bath water filter, 2 is a filtration tank, 3 is a filtration inflow pipe, 4 is a filtration outflow pipe, 5 is a fixing member, 6 is a solid-gas separator, 7a and 7b.
Is a water spray plate, 8 is a filter bed, 9 is a filter medium, and 10 is a bubble. Since the above is the same as the configuration of FIG. 2, the description is omitted. The difference from the configuration of FIG. 2 is that a plurality of plate-like separation members 24 are arranged on the inner wall surface of the filtration tank 2 to which the filtration inflow pipe 3 is connected in a direction substantially orthogonal to the water flow direction.

Although the separating member 24 of this embodiment is in the form of a plate, the separating member 24 may have any shape as long as the bubble 10 can collide with the bubble 10 and temporarily stop. Also, in this embodiment,
The separation member 24 is disposed on the inner wall surface of the filtration tank 2 to which the filtration inflow pipe 3 is connected, substantially perpendicular to the water flow direction, but one end of the separation member 24 abuts on the inner wall surface of the filtration tank 2 to which the filtration inflow pipe 3 is connected. Alternatively, the other end may be disposed on the solid-gas separation plate 6 in a substantially abutting state. Further, the fixing member 5 is not limited to the fixing screw, and other fixing means may be used.

With respect to the bath water filter 1 constructed as described above, the prevention of the outflow of the filter medium 9 contained in the bubbles 10 out of the filtration tank 2 during backwashing will be described with reference to FIG. The hot water flow path at the time of back washing is the same as that shown in FIG.

First, at the time of backwashing, hot water flows into the filtration tank 2 from the filtration outflow pipe 4 containing bubbles 10 caused by the jet operation, is dispersed by the water spray plate 7b, passes through the filter bed 8, and passes through the filter medium 9 The dirt and dust adhered to the filter medium 9 are separated. At this time, the bubbles 10 contained in the hot and cold water float including the filter medium 9. The air bubbles 10 containing the floating filter medium 9 collide with the solid-gas separation plate 6, and the impact causes the filter medium 9 to fall. Further, the filter medium 9 contained in the bubble 10 which has escaped the fall
Drop through the narrow flow path between the side wall of the filtration tank 2 and the solid-gas separation plate 6 due to the impact of the water flow.

However, a part of the filter medium 9 is contained in the bubbles 10 and enters between the solid-gas separator 6 and the inner wall of the filtration tank 2. The filter medium 9 contained in the air bubbles 10 collides with a plurality of separation members 24 arranged on the inner wall surface of the filtration tank 2 in a direction substantially perpendicular to the direction of water flow, and accumulates. Next, the bubble 10 accompanying the accumulated filter medium 9 starts to move, and the filter medium 9 is separated from the bubble 10 and falls by an impact when passing through the separating member 24. The air bubbles 10 are discharged out of the filtration tank 2 through the filtration inflow pipe 3 with hot water along with dirt and dust.

As described above, according to the present embodiment, a plurality of separation members 24 are disposed on the inner wall surface of the filtration tank 2 to which the filtration inflow pipe 3 is connected, in a direction substantially orthogonal to the water flow direction.
The filter medium 9 is not discharged to the outside of the filtration tank 2, and the filtering function does not decrease due to the decrease in the amount of the filter medium 9 in the filtration tank 2.

[0025]

As described above, according to the present invention, one or a plurality of separating members arranged substantially orthogonal to the water flow direction are provided on the inner wall surface of the filtration tank to which the filtration inflow pipe is connected. The filter medium is not discharged out of the filtration tank. Therefore, the amount of the filter medium in the filtration tank is not reduced, the filtration function is not reduced, and the filtration performance is not reduced, and the sanitary condition of the bathtub can always be kept good. Since a reduction in the amount of the filter medium in the filtration tank can be prevented, the filter can be used without worrying about the addition of the filter medium.

[Brief description of the drawings]

FIG. 1 is a longitudinal section of a bath water filter according to one embodiment of the present invention.

FIG. 2 is a longitudinal section of a conventional bath water filter.

FIG. 3 is an explanatory view of hot water flow paths during a filtration operation of a conventional bath water filter.

FIG. 4 is an explanatory view of a flowing path of hot and cold water during a backwash operation of a conventional bath water filter.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bath water filter 2 Filtration tank 3 Filtration inflow pipe 4 Filtration outflow pipe 5 Fixing member 6 Solid-gas separation board 7a Sprinkling plate 7b Sprinkling plate 8 Filter bed 9 Filter medium 10 Bubbles 11 Bathtub 12 Suction port 13 Suction pipe 14 Jet pump 15 Discharge Pipe 16 Jet port 17 Air hose 18 Inlet pipe 19a Three-way joint 19b Three-way joint 20a Three-way valve 20b Three-way valve 21 Drain pipe 22 Branch pipe 23 Outflow pipe 24 Separating member

──────────────────────────────────────────────────続 き Continuation of the front page (56) References: Jikken Sho 60-12573 (JP, Y2) (58) Fields investigated (Int. Cl. ⁷ , DB name) B01D 35/027 A47K 3/00 B01D 35 / 16 F24H 9/00

Claims (1)

(57) [Claims] 1. A filtration inflow pipe, a filtration outflow pipe, and an inner wall surface of a filtration tank on the filtration inflow pipe side.
In the solid-gas separator and the side of the filtration outflow pipe
A water filter for bathing having a filter medium contained therein, wherein an inner wall surface of a filtration tank to which the filtration inflow pipe is connected and the solid-gas content
A bath water filter , comprising: a plurality of separating members vertically provided between the solid-gas separator and the separator.