JPH09327606A - Bath water filtering apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily wash a variable-area filtering member by reversely passing water through the filtering member by housing the variable-area filtering member, which is so constituted as to form a large number of walls radiately from the center axis and have a hollow part in the surrounding of the center axis, in a container having water inlet and outlet apertures and communicating an intake and an outlet with the hollow part. SOLUTION: While loosening a filter sheet in the longitudinal direction, the sheet is rolled and both ends in the width direction are stuck to each other and hill parts and valley parts are radiately formed as to form a prescribed number of ridge lines to give a variable-area member 5, the member is so housed in a filter housing cylinder 8 having water flow holes 7 as to keep respective ridge lines be along the inner face of the side wall 6 and in parallel to the longitudinal direction of the side wall 6 of the cylinder 8, and a conduit pipe 14 having water flow hole 14, which are loopholes, net meshes, or slits, is inserted in the surrounding of the center axis of the filter housing cylinder 8 to give a filter cylinder 9. The filter cylinder 9 is set in an outside container 11 in which an outside water flow aperture 10 is formed in one end, an inside water flow aperture 12 communicates with the hollow part 4, the filter cylinder 9 and the outside container 11 are closed and water is enabled to flow reversely through the filter cylinder 9 through the outside water flow aperture 10 and the inside water flow aperture.

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 filtering apparatus for purifying a bathtub hot water while circulating it.

[0002]

2. Description of the Related Art In recent years, a machine (hereinafter referred to as a "machine") for heating, filtering, sterilizing, and sterilizing hot water in a bathtub while circulating the hot water with a pump has been put to practical use There is. The filtering device of this machine is such that boiled stone, natural or artificial ceramics, or porous granular material such as activated carbon is used as a filtering material (hereinafter collectively referred to as "granular stone"), and the granular stone is packed in a container. It is a mechanism to purify by passing hot water through the gap. There is also a method in which activated carbon is formed into a honeycomb structure and hot water is passed through the activated carbon for purification.

[0003]

The conventional machine is convenient in that the hot water used once can be used repeatedly without changing the bath water every day, and hot water of an appropriate temperature can always be used. Washing and filtration capabilities are not always satisfactory. That is, granules have a function of adsorbing red matter, fatty acids, ammonia and other organic substances and bacteria in hot water on the surface and decomposing them to purify the hot water, but a large amount of dirt around the stones. It adheres like sludge and loses its filtering function, so this granule once or twice a month,
Must be washed manually. This work is often disliked and costly if requested by a contractor.

There is a machine equipped with an automatic cleaning device so as to eliminate the need for this manual cleaning work, but this involves adding cleaning chemicals to the water in the bath and circulating this water for several hours before further cleaning. It takes a day to work for several hours, and it has to be done once or twice a month. This automatic cleaning is not enough. It was necessary to wash the granular stones. Furthermore, since the surface of the granular stone is porous, it is difficult to remove even if it is washed during use, and the washing function is almost lost, so once a year and a half to two years It was also necessary to replace it with a new grain stone.

The present invention has been made in view of the above points, and the object thereof is to pass water from the external water passage through the filter cylinder to the internal water inlet and store it in the filter cylinder. It makes it possible to easily clean the area filter material, and also secures a satisfactory filtering capacity. It is messy and troublesome to wash the granular stone by hand such as in the past, or to wash the equipment with cleaning chemicals. (EN) Provided is a bathtub hot water filtering device which is relieved of a time-consuming washing operation.

[0006]

In order to achieve the above-mentioned object, a bath water filtering apparatus according to the present invention is formed by rolling a filter sheet while loosening it in the length direction and connecting both ends in the width direction. ,
A peak and a trough having a predetermined number of ridges are formed to form an area filter medium, and each of the ridge lines of the side wall is parallel to the length direction of the side wall of the filter medium storage cylinder having a water passage hole. The filter cylinder, which is arranged along the inner surface and has a cavity formed around the central axis of the filter medium storage cylinder, is placed in an outer container having an external water passage at one end, and an inner water passage is provided in the cavity. The filter cylinder and the outer container are closed by being communicated with each other, and reversible water can be formed between the external water inlet and the internal water inlet through the filter cylinder.

It is preferable that a conduit having a mesh, mesh, or slit through holes is inserted into the cavity of the filtration cylinder.

It is preferable that the filter cylinder and the outer container can be opened and closed by a bottom lid.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION The filtering device of the present invention is a filter sheet having a filtering function, such as paper, nonwoven fabric, or open-cell sponge made of natural or synthetic resin, which is loosened in the length direction and in the width direction. A large number of folds are provided at a mountain portion and a valley portion having a ridgeline, and both edges of the filtration sheet in the width direction are connected to form a cylindrical area filter material having a sunflower-shaped cross section. Is arranged in the filter medium containing cylinder having a filter cylinder through hole in the side wall so that the ridge line is parallel to the length direction of the side wall, and a cavity is provided around the central axis of the filter medium containing cylinder. Form a filter tube. Then, this filter cylinder is installed in an outer container provided with an external water passage, and a desired space is provided between the inner wall of the outer container and the inner wall of the side wall and the outer wall of the filter cylinder. The external water passage and the internal water passage are closed by the bottom lid of the outer container, except for the filtration cylinder water passage, the internal water passage, and the external water passage. It is constructed so that reversible water can flow between both water ports.

Further, the filtering device is provided in the cavity of the filtering cylinder.
It is preferable to provide a conduit provided with a water passage of a mesh, a mesh or a slit.

Further, in the filtering device, it is preferable that the bottom wall of the outer container is detachable, and the filtration cylinder and the outer container are openable and closable.

[0012]

[Embodiment 1] As shown in FIGS. 1 and 2, a filter paper is cut as a filter sheet, and the width direction of the filter paper is folded into a folding screen to form a fold 3 in a mountain portion 1 and a valley portion 2. A cylindrical area filter medium 5 having end portions formed by connecting both ends of the end piece with stoppers to form a cavity 4 around a central axis and having a sunflower-like cross section.
To form Next, the area filter material 5 is put into a filter material container 8 made of a synthetic resin having a large number of filter tube water passage holes 7 formed in the side wall 6 to form a filter tube 9.

The filter tube 9 is placed in an outer container 11 provided with an external water passage port 10, and an inner water passage port 12 is provided in the cavity 4.
And the filter medium storage cylinder 8 is closed while leaving the inner water passage 12 and the filtration cylinder water passage hole 7 as hot water flow passages, and the outer container 11 is connected to the outer water passage port 10 and the filtration cylinder water passage. Hole 7
To leave the inside as a flow path and to block the others,
Alternatively, the hot water flowing from the external water passage 10 is allowed to flow out from the external water passage 10 or the internal water passage 12 through the filter cylinder 9.

In order to close the filter cylinder 9 and the outer container 11, grooves 13a and 13b are provided in the central portion of the bottom lid 13 through which the internal water inlet 12 passes, and the filter cylinder 9 and the outer container are provided in the grooves. Each hem of 11 was fitted so as to be watertight. Inside the cavity 4 of the area filtering material 5, a conduit 14 which is an extension of the internal water passage 12 is fully inserted, and a conduit water passage hole 15 is provided on the pipe wall in a mesh shape. The conduit water passage hole 15 is suitable if the conduit 14 is formed of a synthetic resin molded product, and holes, meshes, or slits are formed at the time of molding.

The top surface 16 of the filter material storage cylinder 8 is provided with four legs 17, which are fitted to the guides 18a provided on the top surface 18 of the outer container 11 so that the top surface of the filter material storage cylinder 8 can be fitted. A water passage window 19 is formed between the upper surface 16 of the outer container 11 and the outer surface 16 of the outer container 11. Further, the filter material storage cylinder 8 is wound with two binding bands 20 in order to prevent the area filter material 5 and the filter storage cylinder 8 from being deformed by the filtration pressure.

The blockage of the filter cylinder 9 and the outer container 11 is
As described above, the grooves 13a and 13b of the bottom lid 13 may be structured so that they can be opened and closed by using a stress-fitting structure, but they may be fixed with an adhesive and can be selected to suit the usage conditions. I chose A filter paper was used as the filter material sheet, but a non-woven fabric or a synthetic resin foamed sheet subjected to heat compression processing can also be used.

[0017]

[Embodiment 2] As shown in FIG. 3, a conduit 14 having a flange 21 having a U-shaped cross section and having a fine water passage hole 15 formed in the pipe wall.
The sunflower-shaped end face of the same area filter medium 5 as in the first embodiment is fitted into the rising wall of the flange 21 and is inserted into the cavity portion 4, and the conduit 14 is inserted into the filter medium containing cylinder 8. To form the filter cylinder 9A. Then, the filter cylinder 9A is put into the outer container 11 as in the case of the first embodiment, the internal water passage 12 is connected to the conduit 14, and the bottom cover 13 closes the filter cylinder 9 and the outer container 11.

Reference numeral 20 is a binding band for preventing the area filtering material 5 from being deformed. Even if the binding material is bound from above the filtering material container 8 as in the first embodiment, the second embodiment is also used.
You may bind on the area filter material 5 like in.

[0019]

[Third Embodiment] In the filtration device shown in FIG. 4, a short cylinder 22 standing upright in communication with the internal water passage 12 penetrating the central portion of the bottom lid 13 is integrally provided with the hollow cylinder 22. The filter cylinder 9B is formed by inserting the filter tube 9B into the end portion of the filter tube 9B so that most of the cavity 4 is in a hollow state. Then, in the state where the filter cylinder 9B is put in the outer container 11 as in the first embodiment, the inner water passage 12 is communicated with the cavity 4 of the filter cylinder 12 and the bottom cover 13 is used to filter the filter cylinder 9B and the outer container. 11 is closed and configured.

[0020]

[Fourth Embodiment] In the filtering device shown in FIG.
A short cylinder 23 is integrally erected at the center of the first cylinder 1, and the short cylinder 23 is inserted into the cavity 4 to form a filtration cylinder 9C that is almost hollow in the cavity 4. Then, the filter cylinder 9C is put in the outer container 11 as in the case of the first embodiment, and the internal water passage 12
Is connected to the cavity 4 of the filter cylinder 9C and the bottom cover 13 closes the filter cylinder 9C and the outer container 11.

[0021]

[Table 1]

Tests 1 to 6 shown in Table 1 were carried out by connecting the filtration apparatus shown in the above Examples 1 to 4 to a commercially available machine in which the filtration function was insufficient and the hot water was liable to cause salt in the bath water. , In all cases, the bath water was cleanly purified. Especially,
In Tests 3 and 6, the bath pressure was not applied and the circulation resistance was small, which was preferable. However, since the temperature of the bath water is lost when used in this way, it is better to cover the entire filtration device with a heat insulating material. After the above test was completed, the filtration device was removed and tap water was added in the direction opposite to the water flow at the time of the test. As a result, a large amount of water stains and fine dust could be discharged and removed in a short time.

[0023]

Since the present invention has the above-mentioned structure,
A large number of walls are formed radially with respect to the central axis, and the area filtering material having a cavity around the central axis is housed in a container with holes for water entry and exit. It is housed in a container with an inlet / outlet of the hot water, and the hot water inlet / outlet is passed through the cavity to seal both containers, and the flow path of the hot water is reversible. You can also select and connect to.

Further, by removing from the device and causing a water flow in a direction opposite to that in use, the red and dust collected by the filter medium can be easily discharged and removed. Furthermore, the filtering device of the present invention is suitable for high-speed circulation in the case where the conduit is inserted in the cavity formed around the central axis of the area filtering material, and the one in which the conduit is not inserted is, for example, It is suitable for circulation several tens of times a day, that is, a gentle filtration system. Therefore, according to the present invention, a model corresponding to the use condition can be obtained by making the conduit inserted into the cavity and not inserting the conduit, that is, by making a slight change.

Further, in the filtering device of the present invention, the filter medium accommodating cylinder and the outer container can be opened / closed or not open / closed. In the former case, the area filter medium is exchanged or water is passed. There is an advantage of being able to clean the clogging of the holes, and in the latter case, even if it should happen, there is no concern that the bottom cover will come off due to the influence of temperature, and it is possible to make a model that suits the usage conditions.

Furthermore, since the device of the present invention can be easily attached to and detached from a machine which is commercially available in the past, if it is used while floating in the bath water, it can be removed if it interferes with the bathing. , Can be temporarily placed outside the bath, and this removal can be easily done without dropping the red, dust, etc. already stored in the device into the bath water.

Furthermore, the device of the present invention can be used as an option for commercially available equipment, and can also be used as a single purification device in a large bathtub if a separate water flow pump is attached. It can also be widely used as a water filter.

Furthermore, since the apparatus of the present invention can be installed on the bathtub hot water or taken out of the hot water, the load on the circulation pump can be reduced.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional side view of a filtration device having a conduit inserted into the cavity of the present invention.

FIG. 2 is a cross-sectional plan view of a filtration device having a conduit inserted into the cavity of the present invention.

FIG. 3 is a vertical cross-sectional side view showing another embodiment of a filtering device having a conduit inserted into the cavity of the present invention.

FIG. 4 is a vertical cross-sectional side view of the filtration device of the present invention with no conduit inserted into the cavity.

FIG. 5 is a cross-sectional plan view showing another embodiment of a filtering device in which a conduit is not inserted in the cavity of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 mountain part 2 valley part 3 fold 4 cavity part 5 area filter material 6 side wall 7 filter tube water inlet 8 filter material container 9 filter tube 10 external water inlet 11 outer container 12 internal water inlet 13 bottom lid 14 conduit 15 conduit water inlet 16 Top surface 17 Legs 18 Top surface 19 Water passage window 20 Binding band

Claims (3)

[Claims] 1. A filter sheet is loosened in the length direction and rounded to connect both ends in the width direction to form a predetermined number of ridges and valleys to form an area filtering material. Each of which is arranged along the inner surface of the side wall of the filter medium storage cylinder so as to be parallel to the length direction of the side wall of the filter medium storage cylinder having a water passage hole, and a cavity is formed around the central axis of the filter medium storage cylinder. Put the filter tube into an outer container having an external water inlet at one end, connect the inner water outlet to the cavity, close the filter tube and the outer container, and close the outer water inlet and the inner water outlet. A bathtub hot water filtering device, characterized in that reversible water can be passed between the water ports through the filter cylinder. 2. A bathtub hot water filtering device, wherein a conduit having holes of mesh, mesh or slit is inserted into the cavity of the filtration cylinder according to claim 1. 3. A bathtub hot water filtering device, wherein the filter cylinder and the outer container according to claim 1 can be opened and closed.